The universe is all of space, time, matter, and energy, including Earth and everything in it. It also includes all physical processes, interactions, and constants. Universe, the whole cosmic system of matter and energy of which Earth is a part.
What's in the Universe ?
- Stars, planets, and moons: Earth, the Moon, and all other planets are part of the universe.
- Galaxies: The universe includes galactic filaments made up of stars.
- Subatomic particles: The universe includes all forms of matter, from subatomic particles to stars.
- Time: The universe includes time itself.
What is the observable universe ?
The observable universe is the part of the universe that we can see from Earth. It's a spherical region that includes all matter that emits electromagnetic radiation that has reached Earth.
What's beyond the observable universe ?
The edge of the observable universe is a barrier that light can't cross. Beyond this edge, nothing can interact with us.
Coded by Samiksha Bobade