题目内容

But we can’t see a black hole. A black hole 4exerts a strong gravitational pull and yet it has no matter.

查看答案

搜索结果不匹配？点我反馈

更多问题

It is only space—or thus we think. How can this happen？ 5

Astronomers and scientists think that a black hole is 2a region of

this process of shrinking may be so intense that a black hole results in. Imagine the earth reduced to the 7size of a marble

as the terms we would normally use to describe a scientific phenomenon 1are adequate here.