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They come back to earth younger than they would have been had they stayed on earth for that same period of time. They are traveling so fast relative to the earth that time slows down for them. For a voyage of a few weeks this may only add up to several seconds or maybe a few minutes, but if they traveled even faster for a longer period of time it is theorized they could come back to earth after what seemed like a one year journey to them and, to exaggerate a little, perhaps ten years have passed on earth.
Wiki User
∙ 13y ago
Wiki User
∙ 9y agoThe majority do come back alive & healthy.
Unfortunately some astronauts do die--it is a very dangerous occupation, everything involved has risks:
*Carrying enough oxygen, water & food,
*Cleaning up carbon dioxide
*Working in a vacuum (low pressure environment)
*Velocities faster than a rifle bullet
*Radiation (solar & cosmic)
*Space debris (impact damage)
*Flammable chemicals & fuel
*Poisonous chemicals
*Parachute failure, floatation failure
Generally, a very narrow margin between life & death.
Wiki User
∙ 14y agoNo. Time still continues at a normal pace while astronauts travel in outer space.
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Do astronauts live longer if sent into space?
Technically they do not live longer and in other ways they do. If an Astronaut spends enough time in space then time to them will flow slower than it would on earth. When astronauts spend time on the ISS they come back younger as time for them has gone by slower. Yes this is a hard concept to explain
How do astronauts catch stardust?
When astronauts go on missions they come back with a few specs of stardust.
When did neil armstrong come back to earth?
he didnt return. he died and flowed out to space
True or false. Orbiting astronauts feel weightless because they are beyond the gravitational pull of the earth?
False.Orbiting astronauts feel weightlessness since the gravitational pull of the Earth is balanced by the centrifugal force due to the circular orbital motion, which balance each other out since the spaceship is in orbit. That is, the weightlessness is because of no net force on the astronaut.In a nutshell, if you are orbiting, then irrespective of what height you're doing it, you'd be weightless.
Which military service have the most astronauts come from?
Navy and Marine Corps
Do astronauts loose their memory when they come back to earth?
No... they went to the moon, didn't undergo a lobotomy. There is no reason for astronauts to loose their memories when they returned to earth.
Why do astronauts have to exercise 2 hours a day?
because then they won't be sore when they come back to earth.
Was Apollo 13 successful?
No. It never reached the moon and it was almost lost when it was trying to come back to earth. The astronauts were lucky to have gotten back to earth alive.
Do astronauts live longer if sent into space?
Technically they do not live longer and in other ways they do. If an Astronaut spends enough time in space then time to them will flow slower than it would on earth. When astronauts spend time on the ISS they come back younger as time for them has gone by slower. Yes this is a hard concept to explain
Where does the light come from to let the astronauts see the earth?
The sun.
When did Apollo 1 come back to earth?
It never left. The spacecraft had an electrical fire during testing, killing the three astronauts aboard.
How do astronauts catch stardust?
When astronauts go on missions they come back with a few specs of stardust.
What date did the astronauts come back from the mission to mars?
no astronaut was ever sent to mars
Why doesnt the moon have enough gravity on it to pull us down?
It does. Astronauts on the moon can jump higher than they do on Earth but they still come back down. The moon's gravity is weaker than Earth's because the moon has less mass.
Will dinoaurs come back to earth?
Sadly, no. Dinosaurs are distinct so they will not come back to earth.
Why would astronauts come back from space taller?
When you are on earth the gravity is holding down or putting pressure on your vertebrae and then when you are in space i isn't putting any pressure on your vertebrae, so it stretches out an inch or two.
Why do ghosts come back on earth?
Ghosts come back to earth to visit their house or to do things that they didnt finish. Ghosts probably come back to visit someone that they loved.
