According to A Black Hole Is NOT a Hole by Carolyn Cinami DeCristofano, astronomers think a supermassive black hole is created when

radio waves travel through space to Earth.
there is too much empty space in a galaxy.
gravity causes many, many stars to collide.
a single star or planet explodes and collapses.

Respuesta :

Answer:

D

Explanation:

When a large star collapses it forms a massive blackhole

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Astronomers think a supermassive black hole is created when a single star or planet explodes and collapses.

What are black holes?

Black holes are large holes which are formed in space as a result of the collapse of stars.

In a black hole, the gravitational pull is so strong that no particle can escape once it entered a black hole.

Black holes are very dense and exert strong gravitational pull on material as well as electromagnetic radiation around them.

Therefore, astronomers think a supermassive black hole is created when a single star or planet explodes and collapses.

Learn more about black holes at: https://brainly.com/question/15620028

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