Here's a problem to solve: Melinda looked out of her window one night and saw a very bright star just over the top of a tree. Late that night she looked out and the star was gone. Which BEST explains what happened?

Among the 4 following options, which is the correct answer?

- A: Earth turns so the stars seem to move.
 
- B: Some stars only shine for a few hours each night.
 
- C: The star must have burned up.
 
- D: Some stars move faster than others.
 