What is a Black Hole?

In this episode, find out how what a black hole is, how they can form, and why they are so cool!

Comprehension Questions:
1. A black hole is an area of such immense ______ that nothing—not even light—can escape from it.
2. What is a singularity?
3. What gives a black hole its color?
4. An ______ ______ is probably what you are thinking of when you think of a black hole.
5. How does spaghettification get its name?

Answer Key:
1. Gravity
2. The point where all the mass is trapped
3. Because the black hole sucks in everything, including light
4. Event horizon
5. As a spacecraft approaches a black hole, the gravity will be so much stronger on the side closer to the black hole than at the other side that it will get completely stretched out like a piece of spaghetti.

For a transcript of this video and a fun downloadable poster, visit https://spaceplace.nasa.gov/black-hol...
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