Answer:A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying.
Because no light can get out, people can't see black holes. They are invisible. Space telescopes with special tools can help find black holes. The special tools can see how stars that are very close to black holes act differently than other stars.
Explanation:
Hope that helps!
<span>The inference about Oona that is supported by details in this sentence is that she used to live at the great fort with Ivan and the Russians. Ivan IV was nicknamed "The Terrible" because of his rotten character but a very efficient ruler. He is a very paranoid person until Anastasia became his wife. Whenever Anastasia was around, he was really good to people and a lot of good things has happened during his term. When his wife died, he changed for the worst. During his reign, his goal was to decrease the number of nobility of his country and allow common people to be vocal about their intentions and voices.
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