User talk:-terror-3

black hole birth
it starts with a supernova of a star about 50 times the sunmass. (for example) then the stars core starts to shrink to the size of a neutronstar. but the gravity is too big so the neutronstar keeps shrinking till its so small. take a room of 3square meter. take one square centimeter out. then shink the room and the measured one square centimeter to a room of 3square centimeter. then the one square centimeter is the size of a black hole. you can make a fake black hole by putting two layers of carboard over each other. a small ball wil make a small bump. a bigger ball will make a bigger bump. if you take a ball thats heavy enough it wil tare itself through the carboard.

how galaxies form
eliptical galaxies: they form when other types of galaxies collide.

barred spiral: they formed when two large sub-galaxies collided.

spiral galaxies: they form when a barred spiral had a few spins. i call that the whirlpool effect. a barred spiral's beam wil 'whirlpool' itself to the core by the gravity of the supermassive black hole.

irregurair galaxies: 1. they are the subtype of the eliptical galaxies. 2. they are forming galaxies