1 min readJun 16, 2017
The Universe is all of space and time (spacetime) and its contents,[9] which includes planets, moons, minor planets, stars, galaxies, the contents of intergalactic space and all matter and energy.
The Universe is all of space and time (spacetime) and its contents,[9] which includes planets, moons, minor planets, stars, galaxies, the contents of intergalactic space and all matter and energy.