How do you Age in Space?

Question

I've heard from people that you age twice as fast, others told me you don't age at all. What is it?

Answer 1

Aging is constant and relative. Regardless of how fast you are travelling, the passage of time for you would be constant; you would age at your normal rate. However, relative to somebody else moving at a different velocity to your own, you both would age at different rates (Einstein's Special Theory of Relativity).

Answer 2

You age the same. But if you're planning to go to the Sun, it'll take 300 years :]

Time travel isn't really 'real' but actually, scientifically speaking it is. When astronauts go into space and break through the atmosphere of Earth, they are going faster then Earth's rate so they're going into the FUTURE by around half a second. So you're actually going to be a half second older when you're still the same.

So about the same rate, yes.

Answer 3

You age the same rate.  Unless you are moving at relativistic speeds.

Now if you are weightless, your body changes due to that, but that is not changing the speed of aging.

Answer 4

Radiation can give you many of the effects of aging, including death.  We don't have good data on positive effects of microgravity.  But i hear that they are sending mice into space to live out their entire lives (3 to 5 years).  It's a quicker experiment than sending humans.  Besides, it's easy to get the mice to volunteer, and since they weigh less, it's cheaper.