Question

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Q1. Can a black hole absorb another black hole??????????​

Answer 1

Yes, actually! Like most objects in space, black holes can orbit each other (just like the planets orbit the Sun, or how two stars can orbit each other). In some cases when two black holes are orbiting each other, one cansuck up the other (we call this a collision).

Answer 2

✔. Globular star clusters, for example, pack lots of stars — and the black holes they sometimes form — into a relatively tight space. There, a black hole might meet and combine with other black holes multiple times. The new paper describes another kind of environment where black holes might merge more than once.