Black holes are regions of space where gravity is so strong that not even light can escape from their vicinity. Binary black ...

This breathtaking new Hubble Space Telescope image highlights the stunning spiral galaxy NGC 5643, located about 40 million ...

Some black holes, bound by gravity, rotate around each other.

However, black holes have event horizons, while gravasters have physical shells of matter, so the two objects should behave very differently when they collide. When two black holes collide ...

Sometimes, they collide with other galaxies, which can lead to the galaxies merging and forming a larger, more massive galaxy. The two black holes at the center of the two merging galaxies may ...