Look, There's Uranus!

Look, There's Uranus! is a question from YOU DON'T KNOW JACK.
===Question===
What is a "black hole"?
===Choices===
1. a term for all Disney® movies from the '70s
2. a dead planet
3. a hole in space that has no gravity
4. a collapsed star that emits only x-rays
===Choice Readings===
"A term for all Disney® movies from the '70s, a dead planet, a hole in space that has no gravity, or a collapsed star that only emits x-rays?"
===Choice Quotes===
1. "That could be argued, but no."
2. "You mean like the planet Wrongo?"
3. [echo] "Hello? Anybody there?"
4. "Collapsed star so dense, that only x-rays can escape their pull."
Category:YOU DON’T KNOW JACK Questions
Category:Multiple-Choice Questions
Category:Questions with Choice Readings