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I think it is because the human skeletal system is built to support your weight. Once you have no weight, it stops functioning correctly. Astronauts coming home from the MIR space station had significant bone deterioration after their 6 month stay in space. M uscles don't work as well either, very little energy used to lift stuff in a weightless environment.
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Why do astronauts float weightlessly in space?
There is (apparent) zero gravity. The absolute gravity in orbit is about 90% of what it is on the surface of the earth, but the effective gravity is zero, and for a good reason.The fact is that in orbit, you are actually falling, but your forward speed is such that the curvature of the planet is dropping at the same rate that you are falling.And the astronauts are falling at the exact same speed as their capsule. This is called freefall.
Why do astronauts wear spacesuits in swimming pools before participating in manned space explorations?
because it is the most likely to zero gravity...
Why do Astronauts have to be very fit before going into space?
Why have scientists developed exercises for astronauts living in outer space for long periods of time? Due to lack of gravitational field all the systms of the body but especially the musculoskeletal system is affected, in terms of bone resorption. To mninimize the effects of zero gravity exercises are developed.
What is the training astronauts go through?
Astronauts go through a great deal of training prior to going into space. It can take years for astronauts to go through all the training they need, which includes learning to work in zero gravity and going through a variety of realistic simulations.
Who discovered zero gravity?
Zero gravity used to be more popularly called weightlessness. It can be experience for short periods on some fair ground rides and during airplane acrobatics. However it was first experienced for longer periods by the first astronauts. It was not so much discovered as they were expecting to experience it.
Can astronauts fly out of space?
Yes, astronauts can fly out here and there as they live in zero gravity in space.
Why does an astronauts float when he is in outer space?
Because there is zero gravity in space
How was the zero gravity pen originally used in space?
The zero gravity pen was originally used in space so astronauts wouldn't have to find a pen for example if the zero gravity pen floats then the astronauts would be able to see where a pen is because if the pen did not float then if one of the astronauts needed to write something down they would have to write.
Where is the closest zero gravity place?
There is no "zero gravity" place. Gravity permeates all the universe. Astronauts in orbit are often said to be in zero gravity but they are, in reality, on a position where their orbital velocity balances the attraction of the Earth.
Is scuba diving something astronauts do?
Yes and no. Astronauts under training in a pool with scuba equipment to simulate zero gravity.
Describe 2 potential health risks to astronauts travelling through interplanetary space?
one of them main problems is muscle reduction caused by lack of excersise in zero gravity
How do astronauts train for zero-gravity?
Using the Vomit Comet to experience moments of temporary weightlessness.
What causes deterioration in astronauts bones and muscles during space travel?
because human body cannto resist to zero gravity and they may feel a bit dizzy and uncomfy at the beginning but later they will get used to it and will become better now our bones cannot alos resist zero gravity so thats why is gets deteriorated.
Why do astronauts float weightlessly in space?
There is (apparent) zero gravity. The absolute gravity in orbit is about 90% of what it is on the surface of the earth, but the effective gravity is zero, and for a good reason.The fact is that in orbit, you are actually falling, but your forward speed is such that the curvature of the planet is dropping at the same rate that you are falling.And the astronauts are falling at the exact same speed as their capsule. This is called freefall.
What are some problems for humans working in space?
zero gravity
What is microgravity as experienced by astronauts in orbit?
A very small amount of gravity. (As opposed to the macrogravity on earth). Often called zero-g, but there is not 0 gravity anywhere.
With no gravity can people breath?
Have you ever seen video of Space Shuttle astronauts during a space walk ? They are in zero gravity, but they are working and breathing just fine.
