A black hole is formed by a high-mass star collapses.
Black hole excites astronomers.
High-mass stars collapsing excites astronomers.
what do astronomers get excited about?

[A] movements in the earth's crust
[B] Earth revolving around the sun
[C] earth's core
[D] earthworms
[E] animals
[F] tectonic plates being pushed together
[G] Continents drifting
[H] high-mass stars collapsing