General Science Discussion Thread!

海巳慧琉 said:
but underwater is fun, in space you go freezy freezy :'(

Actually, you don't freeze into human popsicles in outerspace since while it's really cold out there, there's nothing for heat to transfer to: in fact your blood "boils" instead because there's no air pressure to keep them in a liquid state. And you can freeze underwater, since the deepest trenches don't receive any sunlight.
 
Water is an even worse place to be in to freeze since all your heat just transfers to the water.

Your blood doesn't boil in space because of a lack of air pressure. If it was true, nobody could go to Mount Everest.

In space, there are cooling units for space walking astronauts, which says a lot.
 
"Boils" refers to the air bubbles which appears in your blood (hence why it's in quotes), it's not the same boiling as the one you use to cook your spaghetti
 
Oh, thanks for the clarification. Still, your blood doesn't boil in space.
 
In fact, here's what happens to you in space

http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/970603.html
 
In order to be deep enough to instantly freeze you the water pressure would crush you first

also, thats cool, you get the bends in either environment

iirc cooling units for astronauts are because of the suits, not space
 
Not necessarily weight

http://oceanservice.noaa.gov/facts/pressure.html
 
Though weight does play a role. Air also has a weight, and it presses on us as we speak. Due to our bodies being filled with stuff, we don't get flattened.

Just see what happens when you suck on a bag. It flattens. In space that wouldn't happen, because there is no pressure of air to press it flat (disclaimer, don't try that, you'll be dead before you get the chance).
 
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