Phil Plait's Bad Astronomy website started out mainly as a forum for nitpicking the science in movies (hence the name) but over the years, Phil has turned it into a valuable and entertaining way of educating people about astronomy. Here's a video of Phil answering an intriguing question, "why don't giant clouds of gas dissipate in space?"
Rotating Moon from LRO - [image: No one, presently, sees the Moon rotate like this.] No one, presently, sees the Moon rotate like this.
10 hours ago