WILL MARK BRAINLEIST
Highlight the description of a black hole.
From the outside, a black hole is invisible. But if it's invisible, then how can we know it's there?
—A Black Hole Is NOT a Hole,
Carolyn Cinami DeCristofano
What does the description help you understand?
why people want to search for black holes
why a black hole is invisible in space
why it is strange that we know black holes exist
why we know that black holes exist
