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We can mine asteroids for space food

cambridge.org

61–70 of 216 posts

Re: We can mine asteroids for space food

#61
This seems like the ultimate in ultra-processed / factory food.

Kind of interesting to read the comments on the other recent post on ultra-processed foods (https://news.ycombinator.com/item?id=42246739) and consider the arguments made against there and whether they would apply here.

Re: We can mine asteroids for space food

#62

I know this whole thing is just a thought experiment, but I had to wonder about not only the cost of all of this per "astronaut" (off the cuff - $10M per person per year), but the massive amount of energy needed for "life and food production". Just a single line item on my list of "doubtful, but not impossible" is the three quarters of a million Joules of energy needed to melt just 1000 grams of asteroid ice inside y…

In space, assuming you're not too far out, heat is abundant. Literally just put the ice in an insulated room with a window facing the sun. If you want to get fancy, use mirrors to focus the sunlight.

Re: We can mine asteroids for space food

#63
post #35
post #29

Earlier quoted context omitted.

If I'm in a fragile metal bubble in the deep black vastness of space, the texture of my nutrisludge will be the least existential of my worries.

If Rimworld (the game) is to be believed, people that eat too much nutrisludge will eventually snap and eat the people around them.

And then turn them into hats....don't forget the hats.

Re: We can mine asteroids for space food

#64

This seems like the ultimate in ultra-processed / factory food. Kind of interesting to read the comments on the other recent post on ultra-processed foods ( https://news.ycombinator.com/item?id=42246739 ) and consider the arguments made against there and whether they would apply here.

You would likely use this “food” to feed more traditional agriculture for human consumption. A better way of positioning it is processing the content of abiotic asteroids into a biological system capable of providing nourishment to astronauts and space colonists.

Re: We can mine asteroids for space food

#65
post #56

I suppose the next step beyond vegetarianism and veganism will be mineralism: Food using molecules certified never to have been part of any known living organism. I remember there was a fictional advertisement for such a product in a sci-fi story, but not exactly where.

I think such a technical advancement would parallel a moral one.

I’ve been vegan 25 years and would be happy to silence the “but what about plants” people once and for all.

Re: We can mine asteroids for space food

#66

This seems like the ultimate in ultra-processed / factory food. Kind of interesting to read the comments on the other recent post on ultra-processed foods ( https://news.ycombinator.com/item?id=42246739 ) and consider the arguments made against there and whether they would apply here.

You would likely use this “food” to feed more traditional agriculture for human consumption. A better way of positioning it is processing the content of abiotic asteroids into a biological system capable of providing nourishment to astronauts and space colonists.

The article says the cost of feeding one astronaut for one year is around 5,000-160,000 tons of ore per year. My understanding is the rule of thumb is about an order of magnitude nutritional drop off each step - that is, to produce 100cal of meat requires 1000cal of plant food. Bumping those yield estimates, especially the pessimistic end, up by another factor of 10 is just a phenomenal amount of material to process for one person for one year.

Re: We can mine asteroids for space food

#67
post #4

I wonder if it would be possible for e.g. asteroid material to work as an indirect source of nutrition? I.e. carry a specialized yeast on board that can "eat" the asteroid, and, sort of like sourdough, use the yeast's excess growth as food for humans... Sounds nasty now that I say it out loud haha.

We're the scary aliens other ETI's make sci-fi horror movies about. " ...and they wield GREY GOO that turns *everything* it touches into nutrients they lap up in their flappy appendages... "

“They’re Made out of Meat” https://www.mit.edu/people/dpolicar/writing/prose/text/think...

Re: We can mine asteroids for space food

#69
post #56

I suppose the next step beyond vegetarianism and veganism will be mineralism: Food using molecules certified never to have been part of any known living organism. I remember there was a fictional advertisement for such a product in a sci-fi story, but not exactly where.

I've wondered about this too and if in our quest to colonize the solar system and mine asteroids we will inadvertently destroy remnants of dead extraterrestrial life or artifacts of alien species such as defunct sentinel probes that were hidden in an asteroid.

It would be tragic if the only proof of alien life in the solar system was gobbled up by some automated asteroid miner that turns asteroids into shitty consumer goods.

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