"Antigravity" for training astronauts
Name: robert e hepburn
Does NASA have an anti-gravity room for training astronauts?
Yes, sort of. The room is on an airplane and they create anti-gravity
by flying the plane in a big arc. You may have experienced something
like this if you've ever been in a car going over a little hill or
arched bridge. Your body wants to go in a straight line but the car
is going up and then down, so it seems to you like your body is going
up - or floating out of your seat - when the car starts going down.
NASA does the same thing, but since they use an airplane they can make
the "floating" last longer than just a few seconds - I think it lasts
a few minutes. You might get a better answer if you ask your question
in the physics section (hint: the force that causes your body to
float when the car starts going down is called "inertia").
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Update: June 2012