There are millions being created as you read this.
The universe is always expanding - there could be millions a day.
I don't think you could talk about a "day" on a black hole - for a start, nobody could survive in a black hole, to observe such a day. But if you refer to the rotation, one black hole has been observed that seems to spin over a thousand times per second. This rotation, of course, can be different for other black holes.
To unlock the black hole projectile in Crush the Castle 2, you need to complete all levels with a gold medal. Once you achieve this, the black hole projectile will be unlocked for you to use in the game.
Yes. Energy that enters a black hole, such as light, becomes part of its mass.
A Black Hole. Night is darker than day, but there is still artificial light and the light of celestial bodies. However, light cannot escape a black hole in space, so the area occupied by a black hole appears darker than night.
The universe is always expanding - there could be millions a day.
No, not every galaxy contains a black hole. While many galaxies do have a supermassive black hole at their center, there are also galaxies that do not have a black hole.
Only around a black hole. There is a sphere around every black hole where light orbits the black hole.
The Milky Way (our galaxy) is believed to have one in the center. Every or almost every galaxy has a black hole in the middle of it.
Not every galaxy has a black hole at its center. While many galaxies do have supermassive black holes at their centers, there are also galaxies that do not have black holes.
There are lots and lots of black holes in space, but there is always a black hole in the middle of every galaxy.
I don't think you could talk about a "day" on a black hole - for a start, nobody could survive in a black hole, to observe such a day. But if you refer to the rotation, one black hole has been observed that seems to spin over a thousand times per second. This rotation, of course, can be different for other black holes.
No
Yes, according to current scientific understanding, every black hole is believed to contain a singularity at its core.
It seems that just about EVERY galaxy has a huge ("supermassive") black hole in its center.
At the center of every galaxy is a supermassive black hole.
At the center of every galaxy is a supermassive black hole.