Many do at first, most accommodate and adapt. Some never do adapt.
Its call Space Adaptation Sickness (or Syndrome)--SAS. This is one reason why they test in the KC130 aircraft that simulates zero gravity for ~30 seconds.
An astronaut.
an astronaut is someone that goes up in to space
Alan sheperd was the first astronaut in space.
To an astronaut in a space craft, the sky appears to be black.
Astronaut Yuri Gagarian
Yep, if an astronaut has mass, they will have inertia.
If an astronaut's space suit were punctured by a tiny meteorite, the immediate result would be a rapid loss of pressure inside the suit. This could lead to decompression sickness, hypoxia due to lack of oxygen, and exposure to the vacuum of space, which would be fatal within minutes. The astronaut would need to return to the spacecraft urgently or activate emergency protocols to mitigate the effects of the suit breach. Without a quick response, survival would be unlikely.
The environment of space is lethal without appropriate protection: the greatest threat in the vacuum of space derives from the lack of oxygen and pressure, although temperature and radiation also pose risks. The effects of space exposure can result in ebullism, hypoxia, hypocapnia, and decompression sickness.
A person who flies in space is called an astronaut.
An astronaut is a commander, pilot, or a crew member of a spacecraft. In Russia an astronaut is known as a cosmonaut.
Space-based exploration and study is the primary role of an astronaut. A space traveler who is not primarily an astronaut is called a mission specialist.
An astronaut or a cosmonaut.