The universe is manly made out of the material called dark matter. Dark matter is belived to make up 90% of the universe. Dark matter does not absorb of imit light so it is invisible. Dark matter also does not collide wiyh atomic particles but exerts gravitational force.

Black holes are the remains of massive starts that have died. These starts have gone super nova. Black holes suck in everything including light. The only way to detect a black hole is to see the light being mophed around it. There are several theories about black holes. some of them include.

1. Black holes gravity on the inside is so dence that it is like 1000 suns.

2. Black holes might go though space and take you into another part of space.

3. Black holes might go though time once you enter one you can end up at the same place just at a differnt when.

these are just some theories about black holes and i have no prof to support ne of them.

Some people belive in the multiverse. Which is a universe of every possible event ever taking place and every dission that will or ever could have happend has happend to another you in a differnt universe. Personaly i think this sounds kinda like the space time continum or something like that but it is something that is a possibility.

well thats all for now.