What is the definition of being in space?

Answer 1

Feeling strange because you are weightless

Answer 2

Being in space refers to being outside Earth's atmosphere, typically at an altitude above 100 kilometers. In space, there is a vacuum, no atmosphere, and weightlessness due to the absence of gravity, which allows objects to float freely.

Answer 3

There are different competing definitions, but usually "outer space" is defined to start about 100 km from the surface of planet Earth.