Question

what is meant by space or universe

Answer 1

The physical Universe is defined as all of space and time (collectively referred to as spacetime) and their contents. Such contents comprise all of energy in its various forms, including electromagnetic radiation and matter, and therefore planets, moons, stars, galaxies, and the contents of intergalactic space.

Answer 2

space is located on the all planet's there oxygen and gravity will be not present so it is very dangerous