Eating in Space 185
Roland Piquepaille writes "What do you think astronauts aboard the International Space Station (ISS) ate for Thanksgiving? Roasted turkey? Wrong answer. In "Orbital Thanksgiving," NASA tells us they had tortillas and gives details about food in space. If the dining view, 200 miles over the Earth, is great, preparing meals is quite a challenge. For example, there is no refrigerator or freezer aboard the Station, so food must remain good for long periods at room temperature. And you need to avoid crumbs which could float around. This is why tortillas are favored over bread. This overview contains additional references and includes a picture of a cosmonaut preparing food in the ISS galley."
Great! (Score:4, Funny)
Well (Score:3, Funny)
They even have a wider range of available food than I do, and I live at a 5 minutes walk from the local supermarket...
Re:Great! (Score:2)
Nonsense. Human beings are incredibly well adapted to being general purpose tool users and most of the experiments we design rely on those capabilitie
No "Overlord" Replies, please. (Score:5, Funny)
"And you need to avoid crumbs which could float around."
No Homer!
They'll CLOG THE INSTRUMENTS!
Freedom! Horrible Freedom!!! (Score:1)
Re:No "Overlord" Replies, please. (Score:4, Funny)
hot and cold outside (Score:1, Funny)
face away, it's a freezer
what's the problem?
AC
Re:hot and cold outside (Score:3, Informative)
Ever hear of Apollo 13? (Score:2)
Turkey? (Score:5, Interesting)
If the often-nauseous smells coming from the gally aboard a plane are any indicator, the odour of heating food could be really nasty in space.
And what's this about "no freezer"? What exactly is outer space, if not cold? No airlocks aboard the ISS?
Re:Turkey? (Score:2, Informative)
Re:Turkey? (Score:2, Interesting)
It surely can't be as bad as those brightly-coloured "food cubes" that Captain Kirk and his crew used to eat (such as in Journey to Babel [ex-astris-scientia.org]).
On the other hand, in Charlie X, I seem to recall Kirk ordering the galley to make a fake Thanksgiving turkey out of meatloaf. And real food was seen on occasion, emerging from those little slots in the rec room.
Star Trek notwithstanding, I've always been kinda fond of that freeze-dried "space icecream". As for pastes - great for practicality (and very futuristic-s
COld? (Score:4, Insightful)
Space is a great insulator.
Insulator? (Score:3, Informative)
I remember a great demonstration given in the Toronto Science Museum. A piece of rubber tubing placed into a bell jar. A vacuum pump extracting the air until it reached a near-vacuum. Pause... allow air back into the bell jar. Strike rubber with small hammer, rubber shatters and when touched, little pieces of it are _very_ cold indeed.
An object in a vacuum radiates its heat and unless there is an equally warm object radiating heat back, it will cool off until it reaches the
Re:Insulator? (Score:5, Informative)
while the vacuum pump was working, it was decreasing the air pressure in the jar. lower the air pressure, lower the temperature of the remaining air. the rubber cooler by the same principle as your air conditioner.
a vacuum is still a great insulator. (that's why my coffee mug here has a vacuum between the inner and outer shells
Decreasing air pressure... (Score:2)
I retract my argument based on the rubber tube demonstration.
Do you have any idea how fast heat radiation will cool an object in space? Stick a warm turkey in a plastic bag, chuck it out into space, how long will it take to freeze, and how cold will it get?
Or will the turkey remain nicely hot for ages? If space is an insulator, this is what we'd expect...
Re:Decreasing air pressure... (Score:3, Informative)
Stefan's Law states: P = (sigma) * AeT^4, where P is the power radiated, (sigma) = 5.6696 * 10^-8 W/(m^2 * K^4), A is the surface area, e is the emissivity, and T is the temperature (in Kelvin). The emissivity can vary from 0 to 1 depending on the properties of the surface. An ideal absorber, which is also an ideal radiator, has an emissivity of 1 and is known as a black body. So, since an object can both radiate and a
Re:Decreasing air pressure... (Score:2)
I believe this discussion demands a serious (as in swallows and coconuts) analysis and conclusion. In full shade, in Earth orbit, how fast would a hot turkey (say 12 lb?) cool, and to what temperature. In full sunlight, what would the answer be?
First complete answer, even approximate, gets my next five mod points.
Re:Decreasing air pressure... (Score:2)
We can approximate your turkey produces about 100 watt then.
With temperature drop we're interested in (from some 300 to 270K) we can neglect the temperature change.
That is 100J/s. Divided by 4200, 0.023 cal/s loss.
1 calorie will raise/lower temp of 1 gram of water 1 degree.
We want 6000 gram of nearly water (over 80% body weight) down 30 degrees. 180kcal calories to radiate. 7800000 s that is 90 days. Before the turkey freezes, it will be long ro
Re:Decreasing air pressure... (Score:2)
Re:Decreasing air pressure... (Score:2)
Re:Decreasing air pressure... (Score:2)
Re:Decreasing air pressure... (Score:2)
Re:Decreasing air pressure... (Score:2)
Turkey does not lose mass to the vacuum (even water).
Turkey is a 11 cm radius sphere of density 1.0 (about the density of water) which puts it at just over 12 pounds.
Molar mass is 25: Water has a molar mass of 18, and in humans is about 65% of the body. use this as a guess as to the Turkey's water content, neglecting all other molecules the molar mass would be 18/.65=27.6. Subtract a fudge factor for other molecules
Re:Decreasing air pressure... (Score:2)
And no, multiple accounts won't help, Slashdot discriminates on the IP address.
Re:Insulator? (Score:2, Informative)
There are 3 types of heat transfer: conduction, convection, and radiation. Your thermos-like cup (technically a Dewar flask) effectively prevents conduction and convection, but that does not mean there is no heat transfer. Any object will radiate (with EM waves) away heat according to Stefan's Law. It will also absorb radiation according to Stefan's Law. As I described in an [slashdot.org]
Re:Insulator? (Score:2)
No, in a vacuum things will cool radiatively. The innner walls of your thermos are reflective, which prevents thermal radiation from crossing the vacuum. In space, things will cool off very quickly - if they are in shadow. In sunlight they will warm up. That's one of the many reasons it's hard to build spacecraft. As a satellite crosses into Earths shadow it's surface can drop by 150 deg
Re:Insulator? (Score:2)
Re:Turkey? (Score:5, Informative)
Temperature is the mean kinetic energy of particles per volume. Space is quite empty, which keeps the temperature quite low. But, do you know what the best (heat-) insulator is? Vacuum.
What one usually calls "cold" is not something of low temperature, but something with a lower temperature and a good heat conductance. Hence, a piece of metal of room temperature is cold.
It "drains" the heat from you.
Re:Turkey? (Score:4, Insightful)
This is an excellent point, and is also the explanation of something I always wondered about when I was younger: why a swimming pool that's at 20'C (70'F-ish) seems noticably cooler than room temperature. Both room temperature and the water are much colder than our bodies, but water contacting your skin conducts away your heat much more effectively than the air.
Re:Turkey? (Score:5, Informative)
In space, there is much lower background EM depending on whether you are in sight of the sun or not, so for best effect put your "freezer" out behind the ISS away from the sun and I think you'll find that stuff freezes pretty quickly.
Re:Turkey? (Score:2, Informative)
It's the *international* space station. Thanksgiving (as such) was invented in Canada and was a well-established holiday by the time the pilgrims landed in the US.
Regardless, it's a North American holiday. Not everyone in the tin cans spinning above the Earth may have been celebrating it. Of course, it's a US press release, so...
Re:Turkey? (Score:2)
I assure you they did not invent thanksgiving, and at the time of the first thanksgiving it's a safe bet they didn't email the pilgrams to let them in on it even if they had invented it.
Re:Turkey? (Score:2)
An obvious flaw with this argument is that if indeed the inside of the ISS is at 0 degC, then why don't the astro/cosmo nauts freeze as well as their food?
Or does their food orbit separately, and they go on a spacewalk each mealtime?
Wine or beer ? (Score:5, Funny)
Ehhh... (Score:4, Funny)
They probably stopped after the first volunteer mistook the Sun for the Earth and attempted re-entry.
Re:Wine or beer ? (Score:4, Funny)
Re:Wine or beer ? (Score:2)
No wonder there are only smiling faces on all the pictures.
No refrigeration? (Score:2, Funny)
Re:No refrigeration? (Score:5, Interesting)
Temperature control is actually quite a problem so the ISS has a number of features [nasa.gov] to keep temperatures regulated. Overall, space in LEO is cold (averaging 0 F). The problem is that it is far too hot on the sunny side (250 F) and far too cold on the shady side (-250 F). Therefore the ISS is extremely well insulated to maintain an even temperature across the entire inside. But this insulation leads to other problems -- heat builds up from all the equipment. Thus, the ISS has a giant radiator to dump excess heat into space.
Fluid heat exchange circuits will kill people (Score:1, Insightful)
Using fluid heat exchange in space implies either blind trust in technology or, less generously, that it is acceptable to increase the risk to your astronauts even beyond the risk inherent to being in space.
It's simply nuts.
Food fights are forbidden (Score:5, Funny)
Re:Food fights are forbidden (Score:1)
Re:Food fights are forbidden (Score:4, Funny)
Potato Chips (Score:1)
Zero gravity (Score:5, Funny)
Space and zero gravity offer challenges for food preparation.
On the other hand, zero gravity offers unique advantages for food preparation: If you're careful, you never need to run out of counter space.
Re:Zero gravity (Score:2)
So *that's* why they are so picky about sheathing the knives.
Re:Zero gravity (Score:2)
umm... Drink of Astronauts (Score:1, Interesting)
umm.... orange powdery goodness....
Re:umm... Drink of Astronauts (Score:3, Funny)
In space, no one can hear you freeze... (Score:1)
"Dude, where's the Dews I just brought up here?"
"Ugh! They were all warm, so I hung them out over the dark side of the station for a bit."
Re:In space, no one can hear you freeze... (Score:2)
But since you're in a pretty good vacuum, there's no heat loss to conduction or convection... the only way to lose heat is by radiation.
You could call space cold, and technically it is, but when there are only a few atoms per cubic metre it isn't really much of anything...
I highly recommend (Score:5, Interesting)
I, for one, was amazed at the clarity and crispness of the scenes filmed inside the ISS. I have seen other 3D IMAX movies too: Ghosts of the Abyss,etc...but this one beats them all by a huge factor.
I know for sure it is (or was) running in Atlanta (Mall of GA), DC (Smithsonian Air and Space Museum) and Boston (Aquarium IMAX) last year. Google for it...definetly worth the effort. A few reviews and clips here [bigmoviezone.com].
Re:I highly recommend (Score:2)
I'll second that, too (Score:2, Interesting)
The imax shots of the ISS are fantastic too.. you just can't appreciate the size and scale of this thing from a TV.
Also in the UK (Score:2)
No freezers? (Score:5, Informative)
Or perhaps the ARCTIC freezer system, with 38 liters of -20C degree cold stowage...
ISS Fact Sheets [nasa.gov]
Re:No freezers? (Score:2)
Re:No freezers? (Score:3, Interesting)
Hydroponics (Score:2)
Tortillas??? (Score:3, Informative)
Re:Tortillas??? (Score:2, Informative)
Bon appetit!
- charboy
Why no herb garden? (Score:5, Insightful)
The plants might grow strangely in zero-G, but I'm sure the leaves would still taste OK.
Missed opportunity for spinning station (Score:1, Insightful)
There was no need for zero-G if the thing had been designed properly. The fact that the ISS is not structured as two or three nested rings all spinning together for various levels of gravity just shows how primitive the whole thing is.
Herb garden (Score:5, Funny)
You know--
No, no. This is too easy.
Re:Why no herb garden? (Score:1)
"Like, Totally relax man... it's all good!"
Refrigeration (Score:3, Insightful)
However, thinking about it some more, I guess it's because of the relative vacuum of space that makes it more like a gigantic insulator - if you have heat on the ISS, it'd be difficult to dissipate it because there is no medium to carry the heat away. At least, I think that's what might be the case.
Re:Refrigeration (Score:2)
No Turkey is probably good (Score:3, Funny)
Re:No Turkey is probably good (Score:4, Funny)
Re:No Turkey is probably good (OT) (Score:1)
Thankswhat? (Score:5, Insightful)
Uh... That question hasn't really kept me sleepless. Considering that you're talking about the International Space Station...
Well, now that the Spanish astronaut has left the station, Americans count for a whopping 50% of the astronauts aboard the station.
I.e. one guy.
Thanksgiving?
Re:Thankswhat? (Score:3, Funny)
A friend of mine once asked me if they celebrated Thanksgiving in the UK (and by extension, Europe in general). Neither of us has ever been there, but I'm known as a trivia buff, so he figured I'd know. Knowing why the USA celebrates it, but not why Canada does, I ventured
Re:Thankswhat? (Score:2)
[BTW, they certainly don't celebrate the american thanksgiving in scotland at least; I lived there for a few years, and t.g. for me was always a chicken chinese takeaway and a vague feeling of depression...
I know! I know! (Score:1)
A MacYoda menu?
Diego
Dirty space (Score:1)
in space, no one can hear farm animals scream (Score:5, Interesting)
After all, even with months-long space station stays, today's space stations are the equivalent of summer camp compared to what future astronauts will go through. Even if warp drives prove possible -- an enormous if -- astronauts will have to spend years aboard spacecraft to even reach relatively nearby parts of interstellar space.
That being the case, the growing of food in space becomes practically a necessity. As space voyages lengthen, it becomes laughably inefficient to produce on earth the tons of food neccessary for the trip , and blast it into space.
Growing food in space poses all kinds of challenges that make today's pre-packaged problems look trivial. Right from the start, it appears that producing meat, milk, and eggs in space is going to be prohibitively inexpensive. So instead, NASA is funding investigations into growing plants hydroponically--probably extracting minerals from astronaut's crap and urine. Doing this gets around the problem of having to send tons of food into space.
The challenges of having animal agriculture in space are so extreme that it appears that virtually all serious research on space-borne food production is confined to vegan foods. This is purely a practical thing -- it's not as though the scientists at NASA have developed a sudden interest in animal rights. In fact, current studies involving vegan food production in space involve using rats [heilpflanzen-welt.de] to assess nutritional adequacies of what's being grown.
But vegans can take heart. Even if they don't bring down animal agriculture on earth by 2525, it's a fair bet that Major Tom, blasting towards the Dog Star, will be eating a vegan diet -- whether he likes it or not.
Re:in space, no one can hear farm animals scream (Score:5, Informative)
Re:in space, no one can hear farm animals scream (Score:2)
Why not? KFC has been doing it for years [snopes.com].
Re:in space, no one can hear farm animals scream (Score:5, Funny)
I have a simpler solution. Just eat the rats.
Re:in space, no one can hear farm animals scream (Score:1)
This makes sense for astronauts as less launches risks less lives. Also for the people manning the station as thier lives would not 100% dependant on supply missions. I think also in the long run probably more economical too.
This would also lay a working foundation on t
Meat... (Score:2)
Get it delivered (Score:3, Funny)
People on the ISS should order nothing but pizza, it solves the storage problem;hot or cold, the quality problem, the crumb problem...it's gold baby!
And as a bonus since most pizza chains don't have their own rocket program it'll take more than 30 minutes to deliver it, so the food is free!
PS Maybe the ISS crew member from the US should have had that [usatoday.com]
Turkey and Gravy flavoured pop
from Seattle. Un-carbonated though.
Re:Get it delivered (Score:1)
Unless of course, that chain is Pizza Hut [pizzahut.co.nz]
I tried, didn't work (Score:2)
I tried to give the astronaughts a treat, I called my local Jimmy's pizza (better than any chain) delevery, but it turns out they only deliver within 10 miles, and ISS is always farther away than that, even when not on the other side of the earth.
OTOH, 747s fly at less than that distance from the ground, next time I have to fly I'm going to order pizza with those inflight phones. I'm sure the captin will detour a little to hit the delivery area if I bri^h^h^hgive him a large pizza.
HUGE heat sinks (Score:4, Informative)
I wonder what did MIR use for cooling down? [russianspaceweb.com]
I like this chronology [russianspaceweb.com] - a very exciting reading.
Interesting tidbit (Score:2, Interesting)
No refrigerator? (Score:5, Interesting)
Re:No refrigerator? (Score:2)
The person in the picture may be from the STS-102, but the picture is of one of the sleeping bays in the Zvezda service module on the space station.
http://spaceflight.nasa.gov/gallery/images/shuttle /sts-102/html/s102e5100.html [nasa.gov]
And why would the switch above the data plate be in russian on the Space Shuttle? The URL doesn't tell the whole story. Nice try though.
Space hair (Score:4, Funny)
So women in space have hairy legs and hairy armpits? Cancel my ticket, I'll stay on Earth.
the next big diet? (Score:2, Funny)
Space tortillas (Score:5, Interesting)
They wanted to (or did?) use MRI scans of tortilla dough to determine whether there were any changes on a molecular level that could be linked to tortillas taking on a bitter taste after being on the shelf for extended periods of time.
I wish I could get my own NMR spectrometer by saying that I want to study tortillas.
Does anyone else find this to be hilarious?
I don't get the "no refrigerator" thing. (Score:4, Funny)
I mean, it's not like it's rocket science. Well, wait...
Extent of orbital normality (Score:3, Informative)
When will the president visit for Thanksgiving? (Score:2)
stupid cultural elitism (Score:2)
No fridge? (Score:2)
I mean, if you're careful to make sure the container isn't air-tight, it would even be vacuum packed. How much better preservation do you need?
Admittedly, the walk out to the fridge isn't one you'll make when you wake up at 3am wanting a snack...
Re:microgravity ?? (Score:2, Informative)
Re:microgravity ?? (Score:3, Informative)
Re:microgravity ?? (Score:2)
Here r = 6370000 m
G = 6.67 * 10^-11 Nm^2 / kg^2
M = 5.98 * 10^24 kg
So v = 7913.05 m / sec
That's 28486.98 km / h or 17701 mph.