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Is there any reason not to eat food that's been dropped on the surface of the moon?
Precision Destruction by a Cosmic Being (Or how to destroy StackExchange from space)Can we 'beam' energy from the moon?How much stuff could we get into Earth orbit for the start-up cost of initiating asteroid mining?How To Eat the MoonSpace - the ultimate landfillNo More Looking from the Same Side of a Mostly Liquid Surface Terrestrial-based MoonIs there dry land on Earth if the moon orbits just above its Roche limit?No! Not the moon!If there was a Counter-Earth on the other side of the Sun, when would it have been discovered?Would a superintelligent-AI prefer being based on Earth or on the Moon?
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Are there any kind of contaminants or other reasons that might be dangerous? I'd assume that as far as microbes/bacteria goes, eating off the ground on the moon is much safer than it would be on earth.
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VigléViglé
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Are there any kind of contaminants or other reasons that might be dangerous? I'd assume that as far as microbes/bacteria goes, eating off the ground on the moon is much safer than it would be on earth.
space
asked yesterday
VigléViglé
18923
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Comments are not for extended discussion; this conversation has been moved to chat.
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– L.Dutch♦
9 hours ago
add a comment |
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Are there any kind of contaminants or other reasons that might be dangerous? I'd assume that as far as microbes/bacteria goes, eating off the ground on the moon is much safer than it would be on earth.
space
asked yesterday
VigléViglé
18923
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Viglé is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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Are there any kind of contaminants or other reasons that might be dangerous? I'd assume that as far as microbes/bacteria goes, eating off the ground on the moon is much safer than it would be on earth.
space
space
asked yesterday
VigléViglé
18923
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Viglé is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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asked yesterday
VigléViglé
18923
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asked yesterday
VigléViglé
18923
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asked yesterday
VigléViglé
18923
asked yesterday
VigléViglé
18923
18923
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New contributor
Viglé is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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9 hours ago
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9 hours ago
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3 Answers
3
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Lunar regolith/soil/dust is probably rather nasty stuff to ingest.
Where the dust on earth has been whirled about in air currents and rounded off, lunar dust is quite sharp and abrasive. It's similar to the difference between pebbles that have been rounded by water in rivers and coastlines, and regular uneroded rocks. This is true even for the finest of particles.
If you scroll down to the 'harmful effects' section of the linked wiki page, it details some of the problems if you breathe it in (effects similar to silicosis). While your digestive tract is largely a little sturdier than your lungs when it comes to ingesting stuff you shouldn't, I doubt eating significant quantities of what amounts to glass dust would do you much good.
Edit: turns out it's even nastier!
As @TomášZato mentions in the comments, lunar dust also has a significant amount of unreacted molecules and compounds in it. On earth, these have usually reacted a long time ago and are now inert. Needless to say, ingesting particles of reactive matter is also not recommended.
answered yesterday
YnneadwraithYnneadwraith
5,18611428
$endgroup$
35
$begingroup$
"Moon dust! The new craze is here: Internal scrub! Clean your system from the inside out!* *Warning: Effects might be permanent
$endgroup$
– Martijn
yesterday
65
$begingroup$
"The bean counters told me we literally could not afford to buy seven dollars worth of moon rocks, much less seventy million. Bought 'em anyway. Ground 'em up, mixed em into a gel." ref "And guess what? Ground up moon rocks are pure poison. I am deathly ill." ref
$endgroup$
– Baldrickk
yesterday
13
$begingroup$
@Baldrickk "Still, turns out they're a great portal conductor."
$endgroup$
– Ynneadwraith
yesterday
13
$begingroup$
@Ynneadwraith indeed. When life gives you lemons, don't make lemonade, make life take the lemons back! (especially prudent advice when covered in lunar regolith)
$endgroup$
– Baldrickk
yesterday
8
$begingroup$
@bukwyrm It's not the large bits that we're worried about. It's the dust. The fine abrasive particles that would coat the food and be very difficult to wholly remove (judging by the experience of cleaning astronauts EV suits). Not strictly deadly in tiny quantities, but still not something you want to be regularly ingesting (much like glass dust). Active coal may not be terribly problematic, but that doesn't mean ingesting things like elemental phosphorus, sodium, potassium and manganese are a great idea.
$endgroup$
– Ynneadwraith
yesterday
|
show 8 more comments
$begingroup$
Brush it off, eat it.
Of course there are trace amounts of elements present that are potentially harmful, but the bulk is made up of benign stuff: 50% SiO2, 15% Al2O3, 10% CaO, 10% MgO, 5% TiO2 and 5-15% iron. There will be no microorganisms, no parasites, no viruses, no higher organic poisons. there will be mostly sand-like stuff.
About the trace amounts of less cheerful stuff: Consider how much regolith will remain on your dropped sand(ha!)wich - One gram would be much even if you rolled it around in the stuff. Say 1/1000th of that is Chromium (it is not), and pretend all of that then proceeds to villainly oxidise into hexavalent Chromium (the deadly stuff) instead of trivalent Chromium (the vitally important stuff). LD50 for hexavalent Chromium is 50-150 mg/kg ... And you just now ingested .01 mg/kg (if you weigh 100kg). You are safe (but don't make a habit out of it!)
The sharp edges of the stuff will not be an issue either: very large shards of freshly broken glass pose a hazard to your digestive tract, but anything on the scale of 'stuff clinging to your sandwich' does not. If you bite off a shard off a glass of water (as children sometimes do) many emergency personnel will only intervene by making them eat some bread afterwards. It all gets buffered by the slime.
Of course it's not Best Practices to eat stuff from the ground, but a little regolith won't hurt.
answered yesterday
bukwyrmbukwyrm
3,947724
$endgroup$
5
$begingroup$
It is my understanding that one of the Apollo 17 (?) astronauts was accidently exposed to a small amount of regolith and developed a significant rash from it. If I can find a reference, I'll add it, but even if not, I would not be so blythe as to just assume it cannot be harmful.
$endgroup$
– Paul Sinclair
yesterday
1
$begingroup$
@PaulSinclair i listed the bulk ingredients. If you have a Zn allergy and/or get the stuff in your breeches you might have a bad time. Point is OP asked about dropped food, not snuffing it, eating bulk amounts, rubbing yourself with it or any other regolith based abuse. If you can point to a compound that is critical in the amounts ingested (ppm in bolus of 1 g) and probable to exist in Regolith, go ahead.
$endgroup$
– bukwyrm
yesterday
3
$begingroup$
@bukwyrm - As I understand it (again, I'll have to do some searching to find the reference and confirm or deny my memory), the rash was not cause allergens or toxicity, but rather the skin irritation from the jagged dust.
$endgroup$
– Paul Sinclair
yesterday
6
$begingroup$
You'd have to have some pretty through cleaning methods for 'brushing it off' before eating that food. It's possible, but moon dust is difficult to get off of stuff. blogs.discovermagazine.com/d-brief/2018/03/02/lunar-dust
$endgroup$
– Zibbobz
yesterday
2
$begingroup$
@bukwyrm no you are right powdered glass does not appear to be as destructive as I thought. Hoever it does depend on the size of the particles fda.gov/downloads/Food/GuidanceRegulation/UCM252441.pdf
$endgroup$
– Slarty
yesterday
|
show 3 more comments
$begingroup$
It'll break your teeth. The moon is often very cold or very hot on the surface. The sandwich has potentially been flash-frozen or is now burnt depending on where it dropped.
answered yesterday
liljoshuliljoshu
1,651311
$endgroup$
2
$begingroup$
IIRC, day side gets to over 200° F. Might be more concerned about burning your tongue.
$endgroup$
– A C
yesterday
$begingroup$
Also true. I'll update the answer.
$endgroup$
– liljoshu
yesterday
4
$begingroup$
How much heat capacity is in lunar regolith? Without atmosphere, the ground is going to cool from the sandwich and stop burning it. And especially if it's loose material, it's not going to conduct well.
$endgroup$
– John Dvorak
12 hours ago
$begingroup$
When I drop food onto a rock, I pick up the food not the rock. The rock is unable to break my teeth. When I drop food onto sand, I pick up the food with a little sand. The food tastes horrible, but it still doesn't break my teeth. As for flash frozen, this all depends on exactly what the food is; you're assuming that it's got a high water content; would be eaten at earth rtp and you're in the dark on the moon - but even if that's the case people eat ice cream all the time without breaking their teeth.
$endgroup$
– UKMonkey
6 hours ago
$begingroup$
@AC if you dropped cheese - maybe. If you dropped something with a low heat capacity, then it doesn't matter what temperature the moon is; by the time it touches your tongue it'll be a safe temperature again.
$endgroup$
– UKMonkey
6 hours ago
|
show 1 more comment
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3 Answers
3
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votes
3 Answers
3
active
oldest
votes
active
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votes
active
oldest
votes
$begingroup$
Lunar regolith/soil/dust is probably rather nasty stuff to ingest.
Where the dust on earth has been whirled about in air currents and rounded off, lunar dust is quite sharp and abrasive. It's similar to the difference between pebbles that have been rounded by water in rivers and coastlines, and regular uneroded rocks. This is true even for the finest of particles.
If you scroll down to the 'harmful effects' section of the linked wiki page, it details some of the problems if you breathe it in (effects similar to silicosis). While your digestive tract is largely a little sturdier than your lungs when it comes to ingesting stuff you shouldn't, I doubt eating significant quantities of what amounts to glass dust would do you much good.
Edit: turns out it's even nastier!
As @TomášZato mentions in the comments, lunar dust also has a significant amount of unreacted molecules and compounds in it. On earth, these have usually reacted a long time ago and are now inert. Needless to say, ingesting particles of reactive matter is also not recommended.
answered yesterday
YnneadwraithYnneadwraith
5,18611428
$endgroup$
35
$begingroup$
"Moon dust! The new craze is here: Internal scrub! Clean your system from the inside out!* *Warning: Effects might be permanent
$endgroup$
– Martijn
yesterday
65
$begingroup$
"The bean counters told me we literally could not afford to buy seven dollars worth of moon rocks, much less seventy million. Bought 'em anyway. Ground 'em up, mixed em into a gel." ref "And guess what? Ground up moon rocks are pure poison. I am deathly ill." ref
$endgroup$
– Baldrickk
yesterday
13
$begingroup$
@Baldrickk "Still, turns out they're a great portal conductor."
$endgroup$
– Ynneadwraith
yesterday
13
$begingroup$
@Ynneadwraith indeed. When life gives you lemons, don't make lemonade, make life take the lemons back! (especially prudent advice when covered in lunar regolith)
$endgroup$
– Baldrickk
yesterday
8
$begingroup$
@bukwyrm It's not the large bits that we're worried about. It's the dust. The fine abrasive particles that would coat the food and be very difficult to wholly remove (judging by the experience of cleaning astronauts EV suits). Not strictly deadly in tiny quantities, but still not something you want to be regularly ingesting (much like glass dust). Active coal may not be terribly problematic, but that doesn't mean ingesting things like elemental phosphorus, sodium, potassium and manganese are a great idea.
$endgroup$
– Ynneadwraith
yesterday
|
show 8 more comments
$begingroup$
Lunar regolith/soil/dust is probably rather nasty stuff to ingest.
Where the dust on earth has been whirled about in air currents and rounded off, lunar dust is quite sharp and abrasive. It's similar to the difference between pebbles that have been rounded by water in rivers and coastlines, and regular uneroded rocks. This is true even for the finest of particles.
If you scroll down to the 'harmful effects' section of the linked wiki page, it details some of the problems if you breathe it in (effects similar to silicosis). While your digestive tract is largely a little sturdier than your lungs when it comes to ingesting stuff you shouldn't, I doubt eating significant quantities of what amounts to glass dust would do you much good.
Edit: turns out it's even nastier!
As @TomášZato mentions in the comments, lunar dust also has a significant amount of unreacted molecules and compounds in it. On earth, these have usually reacted a long time ago and are now inert. Needless to say, ingesting particles of reactive matter is also not recommended.
answered yesterday
YnneadwraithYnneadwraith
5,18611428
$endgroup$
35
$begingroup$
"Moon dust! The new craze is here: Internal scrub! Clean your system from the inside out!* *Warning: Effects might be permanent
$endgroup$
– Martijn
yesterday
65
$begingroup$
"The bean counters told me we literally could not afford to buy seven dollars worth of moon rocks, much less seventy million. Bought 'em anyway. Ground 'em up, mixed em into a gel." ref "And guess what? Ground up moon rocks are pure poison. I am deathly ill." ref
$endgroup$
– Baldrickk
yesterday
13
$begingroup$
@Baldrickk "Still, turns out they're a great portal conductor."
$endgroup$
– Ynneadwraith
yesterday
13
$begingroup$
@Ynneadwraith indeed. When life gives you lemons, don't make lemonade, make life take the lemons back! (especially prudent advice when covered in lunar regolith)
$endgroup$
– Baldrickk
yesterday
8
$begingroup$
@bukwyrm It's not the large bits that we're worried about. It's the dust. The fine abrasive particles that would coat the food and be very difficult to wholly remove (judging by the experience of cleaning astronauts EV suits). Not strictly deadly in tiny quantities, but still not something you want to be regularly ingesting (much like glass dust). Active coal may not be terribly problematic, but that doesn't mean ingesting things like elemental phosphorus, sodium, potassium and manganese are a great idea.
$endgroup$
– Ynneadwraith
yesterday
|
show 8 more comments
$begingroup$
Lunar regolith/soil/dust is probably rather nasty stuff to ingest.
Where the dust on earth has been whirled about in air currents and rounded off, lunar dust is quite sharp and abrasive. It's similar to the difference between pebbles that have been rounded by water in rivers and coastlines, and regular uneroded rocks. This is true even for the finest of particles.
If you scroll down to the 'harmful effects' section of the linked wiki page, it details some of the problems if you breathe it in (effects similar to silicosis). While your digestive tract is largely a little sturdier than your lungs when it comes to ingesting stuff you shouldn't, I doubt eating significant quantities of what amounts to glass dust would do you much good.
Edit: turns out it's even nastier!
As @TomášZato mentions in the comments, lunar dust also has a significant amount of unreacted molecules and compounds in it. On earth, these have usually reacted a long time ago and are now inert. Needless to say, ingesting particles of reactive matter is also not recommended.
answered yesterday
YnneadwraithYnneadwraith
5,18611428
$endgroup$
Lunar regolith/soil/dust is probably rather nasty stuff to ingest.
Where the dust on earth has been whirled about in air currents and rounded off, lunar dust is quite sharp and abrasive. It's similar to the difference between pebbles that have been rounded by water in rivers and coastlines, and regular uneroded rocks. This is true even for the finest of particles.
If you scroll down to the 'harmful effects' section of the linked wiki page, it details some of the problems if you breathe it in (effects similar to silicosis). While your digestive tract is largely a little sturdier than your lungs when it comes to ingesting stuff you shouldn't, I doubt eating significant quantities of what amounts to glass dust would do you much good.
Edit: turns out it's even nastier!
As @TomášZato mentions in the comments, lunar dust also has a significant amount of unreacted molecules and compounds in it. On earth, these have usually reacted a long time ago and are now inert. Needless to say, ingesting particles of reactive matter is also not recommended.
answered yesterday
YnneadwraithYnneadwraith
5,18611428
edited yesterday
answered yesterday
YnneadwraithYnneadwraith
5,18611428
answered yesterday
YnneadwraithYnneadwraith
5,18611428
answered yesterday
YnneadwraithYnneadwraith
5,18611428
5,18611428
35
$begingroup$
"Moon dust! The new craze is here: Internal scrub! Clean your system from the inside out!* *Warning: Effects might be permanent
$endgroup$
– Martijn
yesterday
65
$begingroup$
"The bean counters told me we literally could not afford to buy seven dollars worth of moon rocks, much less seventy million. Bought 'em anyway. Ground 'em up, mixed em into a gel." ref "And guess what? Ground up moon rocks are pure poison. I am deathly ill." ref
$endgroup$
– Baldrickk
yesterday
13
$begingroup$
@Baldrickk "Still, turns out they're a great portal conductor."
$endgroup$
– Ynneadwraith
yesterday
13
$begingroup$
@Ynneadwraith indeed. When life gives you lemons, don't make lemonade, make life take the lemons back! (especially prudent advice when covered in lunar regolith)
$endgroup$
– Baldrickk
yesterday
8
$begingroup$
@bukwyrm It's not the large bits that we're worried about. It's the dust. The fine abrasive particles that would coat the food and be very difficult to wholly remove (judging by the experience of cleaning astronauts EV suits). Not strictly deadly in tiny quantities, but still not something you want to be regularly ingesting (much like glass dust). Active coal may not be terribly problematic, but that doesn't mean ingesting things like elemental phosphorus, sodium, potassium and manganese are a great idea.
$endgroup$
– Ynneadwraith
yesterday
|
show 8 more comments
35
$begingroup$
"Moon dust! The new craze is here: Internal scrub! Clean your system from the inside out!* *Warning: Effects might be permanent
$endgroup$
– Martijn
yesterday
65
$begingroup$
"The bean counters told me we literally could not afford to buy seven dollars worth of moon rocks, much less seventy million. Bought 'em anyway. Ground 'em up, mixed em into a gel." ref "And guess what? Ground up moon rocks are pure poison. I am deathly ill." ref
$endgroup$
– Baldrickk
yesterday
13
$begingroup$
@Baldrickk "Still, turns out they're a great portal conductor."
$endgroup$
– Ynneadwraith
yesterday
13
$begingroup$
@Ynneadwraith indeed. When life gives you lemons, don't make lemonade, make life take the lemons back! (especially prudent advice when covered in lunar regolith)
$endgroup$
– Baldrickk
yesterday
8
$begingroup$
@bukwyrm It's not the large bits that we're worried about. It's the dust. The fine abrasive particles that would coat the food and be very difficult to wholly remove (judging by the experience of cleaning astronauts EV suits). Not strictly deadly in tiny quantities, but still not something you want to be regularly ingesting (much like glass dust). Active coal may not be terribly problematic, but that doesn't mean ingesting things like elemental phosphorus, sodium, potassium and manganese are a great idea.
$endgroup$
– Ynneadwraith
yesterday
35
35
$begingroup$
"Moon dust! The new craze is here: Internal scrub! Clean your system from the inside out!* *Warning: Effects might be permanent
$endgroup$
– Martijn
yesterday
$begingroup$
"Moon dust! The new craze is here: Internal scrub! Clean your system from the inside out!* *Warning: Effects might be permanent
$endgroup$
– Martijn
yesterday
65
65
$begingroup$
"The bean counters told me we literally could not afford to buy seven dollars worth of moon rocks, much less seventy million. Bought 'em anyway. Ground 'em up, mixed em into a gel." ref "And guess what? Ground up moon rocks are pure poison. I am deathly ill." ref
$endgroup$
– Baldrickk
yesterday
$begingroup$
"The bean counters told me we literally could not afford to buy seven dollars worth of moon rocks, much less seventy million. Bought 'em anyway. Ground 'em up, mixed em into a gel." ref "And guess what? Ground up moon rocks are pure poison. I am deathly ill." ref
$endgroup$
– Baldrickk
yesterday
13
13
$begingroup$
@Baldrickk "Still, turns out they're a great portal conductor."
$endgroup$
– Ynneadwraith
yesterday
$begingroup$
@Baldrickk "Still, turns out they're a great portal conductor."
$endgroup$
– Ynneadwraith
yesterday
13
13
$begingroup$
@Ynneadwraith indeed. When life gives you lemons, don't make lemonade, make life take the lemons back! (especially prudent advice when covered in lunar regolith)
$endgroup$
– Baldrickk
yesterday
$begingroup$
@Ynneadwraith indeed. When life gives you lemons, don't make lemonade, make life take the lemons back! (especially prudent advice when covered in lunar regolith)
$endgroup$
– Baldrickk
yesterday
8
8
$begingroup$
@bukwyrm It's not the large bits that we're worried about. It's the dust. The fine abrasive particles that would coat the food and be very difficult to wholly remove (judging by the experience of cleaning astronauts EV suits). Not strictly deadly in tiny quantities, but still not something you want to be regularly ingesting (much like glass dust). Active coal may not be terribly problematic, but that doesn't mean ingesting things like elemental phosphorus, sodium, potassium and manganese are a great idea.
$endgroup$
– Ynneadwraith
yesterday
$begingroup$
@bukwyrm It's not the large bits that we're worried about. It's the dust. The fine abrasive particles that would coat the food and be very difficult to wholly remove (judging by the experience of cleaning astronauts EV suits). Not strictly deadly in tiny quantities, but still not something you want to be regularly ingesting (much like glass dust). Active coal may not be terribly problematic, but that doesn't mean ingesting things like elemental phosphorus, sodium, potassium and manganese are a great idea.
$endgroup$
– Ynneadwraith
yesterday
|
show 8 more comments
$begingroup$
Brush it off, eat it.
Of course there are trace amounts of elements present that are potentially harmful, but the bulk is made up of benign stuff: 50% SiO2, 15% Al2O3, 10% CaO, 10% MgO, 5% TiO2 and 5-15% iron. There will be no microorganisms, no parasites, no viruses, no higher organic poisons. there will be mostly sand-like stuff.
About the trace amounts of less cheerful stuff: Consider how much regolith will remain on your dropped sand(ha!)wich - One gram would be much even if you rolled it around in the stuff. Say 1/1000th of that is Chromium (it is not), and pretend all of that then proceeds to villainly oxidise into hexavalent Chromium (the deadly stuff) instead of trivalent Chromium (the vitally important stuff). LD50 for hexavalent Chromium is 50-150 mg/kg ... And you just now ingested .01 mg/kg (if you weigh 100kg). You are safe (but don't make a habit out of it!)
The sharp edges of the stuff will not be an issue either: very large shards of freshly broken glass pose a hazard to your digestive tract, but anything on the scale of 'stuff clinging to your sandwich' does not. If you bite off a shard off a glass of water (as children sometimes do) many emergency personnel will only intervene by making them eat some bread afterwards. It all gets buffered by the slime.
Of course it's not Best Practices to eat stuff from the ground, but a little regolith won't hurt.
answered yesterday
bukwyrmbukwyrm
3,947724
$endgroup$
5
$begingroup$
It is my understanding that one of the Apollo 17 (?) astronauts was accidently exposed to a small amount of regolith and developed a significant rash from it. If I can find a reference, I'll add it, but even if not, I would not be so blythe as to just assume it cannot be harmful.
$endgroup$
– Paul Sinclair
yesterday
1
$begingroup$
@PaulSinclair i listed the bulk ingredients. If you have a Zn allergy and/or get the stuff in your breeches you might have a bad time. Point is OP asked about dropped food, not snuffing it, eating bulk amounts, rubbing yourself with it or any other regolith based abuse. If you can point to a compound that is critical in the amounts ingested (ppm in bolus of 1 g) and probable to exist in Regolith, go ahead.
$endgroup$
– bukwyrm
yesterday
3
$begingroup$
@bukwyrm - As I understand it (again, I'll have to do some searching to find the reference and confirm or deny my memory), the rash was not cause allergens or toxicity, but rather the skin irritation from the jagged dust.
$endgroup$
– Paul Sinclair
yesterday
6
$begingroup$
You'd have to have some pretty through cleaning methods for 'brushing it off' before eating that food. It's possible, but moon dust is difficult to get off of stuff. blogs.discovermagazine.com/d-brief/2018/03/02/lunar-dust
$endgroup$
– Zibbobz
yesterday
2
$begingroup$
@bukwyrm no you are right powdered glass does not appear to be as destructive as I thought. Hoever it does depend on the size of the particles fda.gov/downloads/Food/GuidanceRegulation/UCM252441.pdf
$endgroup$
– Slarty
yesterday
|
show 3 more comments
$begingroup$
Brush it off, eat it.
Of course there are trace amounts of elements present that are potentially harmful, but the bulk is made up of benign stuff: 50% SiO2, 15% Al2O3, 10% CaO, 10% MgO, 5% TiO2 and 5-15% iron. There will be no microorganisms, no parasites, no viruses, no higher organic poisons. there will be mostly sand-like stuff.
About the trace amounts of less cheerful stuff: Consider how much regolith will remain on your dropped sand(ha!)wich - One gram would be much even if you rolled it around in the stuff. Say 1/1000th of that is Chromium (it is not), and pretend all of that then proceeds to villainly oxidise into hexavalent Chromium (the deadly stuff) instead of trivalent Chromium (the vitally important stuff). LD50 for hexavalent Chromium is 50-150 mg/kg ... And you just now ingested .01 mg/kg (if you weigh 100kg). You are safe (but don't make a habit out of it!)
The sharp edges of the stuff will not be an issue either: very large shards of freshly broken glass pose a hazard to your digestive tract, but anything on the scale of 'stuff clinging to your sandwich' does not. If you bite off a shard off a glass of water (as children sometimes do) many emergency personnel will only intervene by making them eat some bread afterwards. It all gets buffered by the slime.
Of course it's not Best Practices to eat stuff from the ground, but a little regolith won't hurt.
answered yesterday
bukwyrmbukwyrm
3,947724
$endgroup$
5
$begingroup$
It is my understanding that one of the Apollo 17 (?) astronauts was accidently exposed to a small amount of regolith and developed a significant rash from it. If I can find a reference, I'll add it, but even if not, I would not be so blythe as to just assume it cannot be harmful.
$endgroup$
– Paul Sinclair
yesterday
1
$begingroup$
@PaulSinclair i listed the bulk ingredients. If you have a Zn allergy and/or get the stuff in your breeches you might have a bad time. Point is OP asked about dropped food, not snuffing it, eating bulk amounts, rubbing yourself with it or any other regolith based abuse. If you can point to a compound that is critical in the amounts ingested (ppm in bolus of 1 g) and probable to exist in Regolith, go ahead.
$endgroup$
– bukwyrm
yesterday
3
$begingroup$
@bukwyrm - As I understand it (again, I'll have to do some searching to find the reference and confirm or deny my memory), the rash was not cause allergens or toxicity, but rather the skin irritation from the jagged dust.
$endgroup$
– Paul Sinclair
yesterday
6
$begingroup$
You'd have to have some pretty through cleaning methods for 'brushing it off' before eating that food. It's possible, but moon dust is difficult to get off of stuff. blogs.discovermagazine.com/d-brief/2018/03/02/lunar-dust
$endgroup$
– Zibbobz
yesterday
2
$begingroup$
@bukwyrm no you are right powdered glass does not appear to be as destructive as I thought. Hoever it does depend on the size of the particles fda.gov/downloads/Food/GuidanceRegulation/UCM252441.pdf
$endgroup$
– Slarty
yesterday
|
show 3 more comments
$begingroup$
Brush it off, eat it.
Of course there are trace amounts of elements present that are potentially harmful, but the bulk is made up of benign stuff: 50% SiO2, 15% Al2O3, 10% CaO, 10% MgO, 5% TiO2 and 5-15% iron. There will be no microorganisms, no parasites, no viruses, no higher organic poisons. there will be mostly sand-like stuff.
About the trace amounts of less cheerful stuff: Consider how much regolith will remain on your dropped sand(ha!)wich - One gram would be much even if you rolled it around in the stuff. Say 1/1000th of that is Chromium (it is not), and pretend all of that then proceeds to villainly oxidise into hexavalent Chromium (the deadly stuff) instead of trivalent Chromium (the vitally important stuff). LD50 for hexavalent Chromium is 50-150 mg/kg ... And you just now ingested .01 mg/kg (if you weigh 100kg). You are safe (but don't make a habit out of it!)
The sharp edges of the stuff will not be an issue either: very large shards of freshly broken glass pose a hazard to your digestive tract, but anything on the scale of 'stuff clinging to your sandwich' does not. If you bite off a shard off a glass of water (as children sometimes do) many emergency personnel will only intervene by making them eat some bread afterwards. It all gets buffered by the slime.
Of course it's not Best Practices to eat stuff from the ground, but a little regolith won't hurt.
answered yesterday
bukwyrmbukwyrm
3,947724
$endgroup$
Brush it off, eat it.
Of course there are trace amounts of elements present that are potentially harmful, but the bulk is made up of benign stuff: 50% SiO2, 15% Al2O3, 10% CaO, 10% MgO, 5% TiO2 and 5-15% iron. There will be no microorganisms, no parasites, no viruses, no higher organic poisons. there will be mostly sand-like stuff.
About the trace amounts of less cheerful stuff: Consider how much regolith will remain on your dropped sand(ha!)wich - One gram would be much even if you rolled it around in the stuff. Say 1/1000th of that is Chromium (it is not), and pretend all of that then proceeds to villainly oxidise into hexavalent Chromium (the deadly stuff) instead of trivalent Chromium (the vitally important stuff). LD50 for hexavalent Chromium is 50-150 mg/kg ... And you just now ingested .01 mg/kg (if you weigh 100kg). You are safe (but don't make a habit out of it!)
The sharp edges of the stuff will not be an issue either: very large shards of freshly broken glass pose a hazard to your digestive tract, but anything on the scale of 'stuff clinging to your sandwich' does not. If you bite off a shard off a glass of water (as children sometimes do) many emergency personnel will only intervene by making them eat some bread afterwards. It all gets buffered by the slime.
Of course it's not Best Practices to eat stuff from the ground, but a little regolith won't hurt.
answered yesterday
bukwyrmbukwyrm
3,947724
answered yesterday
bukwyrmbukwyrm
3,947724
answered yesterday
bukwyrmbukwyrm
3,947724
answered yesterday
bukwyrmbukwyrm
3,947724
3,947724
5
$begingroup$
It is my understanding that one of the Apollo 17 (?) astronauts was accidently exposed to a small amount of regolith and developed a significant rash from it. If I can find a reference, I'll add it, but even if not, I would not be so blythe as to just assume it cannot be harmful.
$endgroup$
– Paul Sinclair
yesterday
1
$begingroup$
@PaulSinclair i listed the bulk ingredients. If you have a Zn allergy and/or get the stuff in your breeches you might have a bad time. Point is OP asked about dropped food, not snuffing it, eating bulk amounts, rubbing yourself with it or any other regolith based abuse. If you can point to a compound that is critical in the amounts ingested (ppm in bolus of 1 g) and probable to exist in Regolith, go ahead.
$endgroup$
– bukwyrm
yesterday
3
$begingroup$
@bukwyrm - As I understand it (again, I'll have to do some searching to find the reference and confirm or deny my memory), the rash was not cause allergens or toxicity, but rather the skin irritation from the jagged dust.
$endgroup$
– Paul Sinclair
yesterday
6
$begingroup$
You'd have to have some pretty through cleaning methods for 'brushing it off' before eating that food. It's possible, but moon dust is difficult to get off of stuff. blogs.discovermagazine.com/d-brief/2018/03/02/lunar-dust
$endgroup$
– Zibbobz
yesterday
2
$begingroup$
@bukwyrm no you are right powdered glass does not appear to be as destructive as I thought. Hoever it does depend on the size of the particles fda.gov/downloads/Food/GuidanceRegulation/UCM252441.pdf
$endgroup$
– Slarty
yesterday
|
show 3 more comments
5
$begingroup$
It is my understanding that one of the Apollo 17 (?) astronauts was accidently exposed to a small amount of regolith and developed a significant rash from it. If I can find a reference, I'll add it, but even if not, I would not be so blythe as to just assume it cannot be harmful.
$endgroup$
– Paul Sinclair
yesterday
1
$begingroup$
@PaulSinclair i listed the bulk ingredients. If you have a Zn allergy and/or get the stuff in your breeches you might have a bad time. Point is OP asked about dropped food, not snuffing it, eating bulk amounts, rubbing yourself with it or any other regolith based abuse. If you can point to a compound that is critical in the amounts ingested (ppm in bolus of 1 g) and probable to exist in Regolith, go ahead.
$endgroup$
– bukwyrm
yesterday
3
$begingroup$
@bukwyrm - As I understand it (again, I'll have to do some searching to find the reference and confirm or deny my memory), the rash was not cause allergens or toxicity, but rather the skin irritation from the jagged dust.
$endgroup$
– Paul Sinclair
yesterday
6
$begingroup$
You'd have to have some pretty through cleaning methods for 'brushing it off' before eating that food. It's possible, but moon dust is difficult to get off of stuff. blogs.discovermagazine.com/d-brief/2018/03/02/lunar-dust
$endgroup$
– Zibbobz
yesterday
2
$begingroup$
@bukwyrm no you are right powdered glass does not appear to be as destructive as I thought. Hoever it does depend on the size of the particles fda.gov/downloads/Food/GuidanceRegulation/UCM252441.pdf
$endgroup$
– Slarty
yesterday
5
5
$begingroup$
It is my understanding that one of the Apollo 17 (?) astronauts was accidently exposed to a small amount of regolith and developed a significant rash from it. If I can find a reference, I'll add it, but even if not, I would not be so blythe as to just assume it cannot be harmful.
$endgroup$
– Paul Sinclair
yesterday
$begingroup$
It is my understanding that one of the Apollo 17 (?) astronauts was accidently exposed to a small amount of regolith and developed a significant rash from it. If I can find a reference, I'll add it, but even if not, I would not be so blythe as to just assume it cannot be harmful.
$endgroup$
– Paul Sinclair
yesterday
1
1
$begingroup$
@PaulSinclair i listed the bulk ingredients. If you have a Zn allergy and/or get the stuff in your breeches you might have a bad time. Point is OP asked about dropped food, not snuffing it, eating bulk amounts, rubbing yourself with it or any other regolith based abuse. If you can point to a compound that is critical in the amounts ingested (ppm in bolus of 1 g) and probable to exist in Regolith, go ahead.
$endgroup$
– bukwyrm
yesterday
$begingroup$
@PaulSinclair i listed the bulk ingredients. If you have a Zn allergy and/or get the stuff in your breeches you might have a bad time. Point is OP asked about dropped food, not snuffing it, eating bulk amounts, rubbing yourself with it or any other regolith based abuse. If you can point to a compound that is critical in the amounts ingested (ppm in bolus of 1 g) and probable to exist in Regolith, go ahead.
$endgroup$
– bukwyrm
yesterday
3
3
$begingroup$
@bukwyrm - As I understand it (again, I'll have to do some searching to find the reference and confirm or deny my memory), the rash was not cause allergens or toxicity, but rather the skin irritation from the jagged dust.
$endgroup$
– Paul Sinclair
yesterday
$begingroup$
@bukwyrm - As I understand it (again, I'll have to do some searching to find the reference and confirm or deny my memory), the rash was not cause allergens or toxicity, but rather the skin irritation from the jagged dust.
$endgroup$
– Paul Sinclair
yesterday
6
6
$begingroup$
You'd have to have some pretty through cleaning methods for 'brushing it off' before eating that food. It's possible, but moon dust is difficult to get off of stuff. blogs.discovermagazine.com/d-brief/2018/03/02/lunar-dust
$endgroup$
– Zibbobz
yesterday
$begingroup$
You'd have to have some pretty through cleaning methods for 'brushing it off' before eating that food. It's possible, but moon dust is difficult to get off of stuff. blogs.discovermagazine.com/d-brief/2018/03/02/lunar-dust
$endgroup$
– Zibbobz
yesterday
2
2
$begingroup$
@bukwyrm no you are right powdered glass does not appear to be as destructive as I thought. Hoever it does depend on the size of the particles fda.gov/downloads/Food/GuidanceRegulation/UCM252441.pdf
$endgroup$
– Slarty
yesterday
$begingroup$
@bukwyrm no you are right powdered glass does not appear to be as destructive as I thought. Hoever it does depend on the size of the particles fda.gov/downloads/Food/GuidanceRegulation/UCM252441.pdf
$endgroup$
– Slarty
yesterday
|
show 3 more comments
$begingroup$
It'll break your teeth. The moon is often very cold or very hot on the surface. The sandwich has potentially been flash-frozen or is now burnt depending on where it dropped.
answered yesterday
liljoshuliljoshu
1,651311
$endgroup$
2
$begingroup$
IIRC, day side gets to over 200° F. Might be more concerned about burning your tongue.
$endgroup$
– A C
yesterday
$begingroup$
Also true. I'll update the answer.
$endgroup$
– liljoshu
yesterday
4
$begingroup$
How much heat capacity is in lunar regolith? Without atmosphere, the ground is going to cool from the sandwich and stop burning it. And especially if it's loose material, it's not going to conduct well.
$endgroup$
– John Dvorak
12 hours ago
$begingroup$
When I drop food onto a rock, I pick up the food not the rock. The rock is unable to break my teeth. When I drop food onto sand, I pick up the food with a little sand. The food tastes horrible, but it still doesn't break my teeth. As for flash frozen, this all depends on exactly what the food is; you're assuming that it's got a high water content; would be eaten at earth rtp and you're in the dark on the moon - but even if that's the case people eat ice cream all the time without breaking their teeth.
$endgroup$
– UKMonkey
6 hours ago
$begingroup$
@AC if you dropped cheese - maybe. If you dropped something with a low heat capacity, then it doesn't matter what temperature the moon is; by the time it touches your tongue it'll be a safe temperature again.
$endgroup$
– UKMonkey
6 hours ago
|
show 1 more comment
$begingroup$
It'll break your teeth. The moon is often very cold or very hot on the surface. The sandwich has potentially been flash-frozen or is now burnt depending on where it dropped.
answered yesterday
liljoshuliljoshu
1,651311
$endgroup$
2
$begingroup$
IIRC, day side gets to over 200° F. Might be more concerned about burning your tongue.
$endgroup$
– A C
yesterday
$begingroup$
Also true. I'll update the answer.
$endgroup$
– liljoshu
yesterday
4
$begingroup$
How much heat capacity is in lunar regolith? Without atmosphere, the ground is going to cool from the sandwich and stop burning it. And especially if it's loose material, it's not going to conduct well.
$endgroup$
– John Dvorak
12 hours ago
$begingroup$
When I drop food onto a rock, I pick up the food not the rock. The rock is unable to break my teeth. When I drop food onto sand, I pick up the food with a little sand. The food tastes horrible, but it still doesn't break my teeth. As for flash frozen, this all depends on exactly what the food is; you're assuming that it's got a high water content; would be eaten at earth rtp and you're in the dark on the moon - but even if that's the case people eat ice cream all the time without breaking their teeth.
$endgroup$
– UKMonkey
6 hours ago
$begingroup$
@AC if you dropped cheese - maybe. If you dropped something with a low heat capacity, then it doesn't matter what temperature the moon is; by the time it touches your tongue it'll be a safe temperature again.
$endgroup$
– UKMonkey
6 hours ago
|
show 1 more comment
$begingroup$
It'll break your teeth. The moon is often very cold or very hot on the surface. The sandwich has potentially been flash-frozen or is now burnt depending on where it dropped.
answered yesterday
liljoshuliljoshu
1,651311
$endgroup$
It'll break your teeth. The moon is often very cold or very hot on the surface. The sandwich has potentially been flash-frozen or is now burnt depending on where it dropped.
answered yesterday
liljoshuliljoshu
1,651311
edited yesterday
answered yesterday
liljoshuliljoshu
1,651311
answered yesterday
liljoshuliljoshu
1,651311
answered yesterday
liljoshuliljoshu
1,651311
1,651311
2
$begingroup$
IIRC, day side gets to over 200° F. Might be more concerned about burning your tongue.
$endgroup$
– A C
yesterday
$begingroup$
Also true. I'll update the answer.
$endgroup$
– liljoshu
yesterday
4
$begingroup$
How much heat capacity is in lunar regolith? Without atmosphere, the ground is going to cool from the sandwich and stop burning it. And especially if it's loose material, it's not going to conduct well.
$endgroup$
– John Dvorak
12 hours ago
$begingroup$
When I drop food onto a rock, I pick up the food not the rock. The rock is unable to break my teeth. When I drop food onto sand, I pick up the food with a little sand. The food tastes horrible, but it still doesn't break my teeth. As for flash frozen, this all depends on exactly what the food is; you're assuming that it's got a high water content; would be eaten at earth rtp and you're in the dark on the moon - but even if that's the case people eat ice cream all the time without breaking their teeth.
$endgroup$
– UKMonkey
6 hours ago
$begingroup$
@AC if you dropped cheese - maybe. If you dropped something with a low heat capacity, then it doesn't matter what temperature the moon is; by the time it touches your tongue it'll be a safe temperature again.
$endgroup$
– UKMonkey
6 hours ago
|
show 1 more comment
2
$begingroup$
IIRC, day side gets to over 200° F. Might be more concerned about burning your tongue.
$endgroup$
– A C
yesterday
$begingroup$
Also true. I'll update the answer.
$endgroup$
– liljoshu
yesterday
4
$begingroup$
How much heat capacity is in lunar regolith? Without atmosphere, the ground is going to cool from the sandwich and stop burning it. And especially if it's loose material, it's not going to conduct well.
$endgroup$
– John Dvorak
12 hours ago
$begingroup$
When I drop food onto a rock, I pick up the food not the rock. The rock is unable to break my teeth. When I drop food onto sand, I pick up the food with a little sand. The food tastes horrible, but it still doesn't break my teeth. As for flash frozen, this all depends on exactly what the food is; you're assuming that it's got a high water content; would be eaten at earth rtp and you're in the dark on the moon - but even if that's the case people eat ice cream all the time without breaking their teeth.
$endgroup$
– UKMonkey
6 hours ago
$begingroup$
@AC if you dropped cheese - maybe. If you dropped something with a low heat capacity, then it doesn't matter what temperature the moon is; by the time it touches your tongue it'll be a safe temperature again.
$endgroup$
– UKMonkey
6 hours ago
2
2
$begingroup$
IIRC, day side gets to over 200° F. Might be more concerned about burning your tongue.
$endgroup$
– A C
yesterday
$begingroup$
IIRC, day side gets to over 200° F. Might be more concerned about burning your tongue.
$endgroup$
– A C
yesterday
$begingroup$
Also true. I'll update the answer.
$endgroup$
– liljoshu
yesterday
$begingroup$
Also true. I'll update the answer.
$endgroup$
– liljoshu
yesterday
4
4
$begingroup$
How much heat capacity is in lunar regolith? Without atmosphere, the ground is going to cool from the sandwich and stop burning it. And especially if it's loose material, it's not going to conduct well.
$endgroup$
– John Dvorak
12 hours ago
$begingroup$
How much heat capacity is in lunar regolith? Without atmosphere, the ground is going to cool from the sandwich and stop burning it. And especially if it's loose material, it's not going to conduct well.
$endgroup$
– John Dvorak
12 hours ago
$begingroup$
When I drop food onto a rock, I pick up the food not the rock. The rock is unable to break my teeth. When I drop food onto sand, I pick up the food with a little sand. The food tastes horrible, but it still doesn't break my teeth. As for flash frozen, this all depends on exactly what the food is; you're assuming that it's got a high water content; would be eaten at earth rtp and you're in the dark on the moon - but even if that's the case people eat ice cream all the time without breaking their teeth.
$endgroup$
– UKMonkey
6 hours ago
$begingroup$
When I drop food onto a rock, I pick up the food not the rock. The rock is unable to break my teeth. When I drop food onto sand, I pick up the food with a little sand. The food tastes horrible, but it still doesn't break my teeth. As for flash frozen, this all depends on exactly what the food is; you're assuming that it's got a high water content; would be eaten at earth rtp and you're in the dark on the moon - but even if that's the case people eat ice cream all the time without breaking their teeth.
$endgroup$
– UKMonkey
6 hours ago
$begingroup$
@AC if you dropped cheese - maybe. If you dropped something with a low heat capacity, then it doesn't matter what temperature the moon is; by the time it touches your tongue it'll be a safe temperature again.
$endgroup$
– UKMonkey
6 hours ago
$begingroup$
@AC if you dropped cheese - maybe. If you dropped something with a low heat capacity, then it doesn't matter what temperature the moon is; by the time it touches your tongue it'll be a safe temperature again.
$endgroup$
– UKMonkey
6 hours ago
|
show 1 more comment
Viglé is a new contributor. Be nice, and check out our Code of Conduct.
Viglé is a new contributor. Be nice, and check out our Code of Conduct.
Viglé is a new contributor. Be nice, and check out our Code of Conduct.
Viglé is a new contributor. Be nice, and check out our Code of Conduct.
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9 hours ago