This week in Skywatch, I want to go back to basics when it comes to the moon. So why does the moon change shape? Why is it a crescent on one night, a half-moon another night, and a full moon on yet ...

This month's full moon is an extra special one, thanks to an optical illusion so baffling, nobody actually knows how it works. If you live in the Northern Hemisphere, and you step outside tonight, you ...

You’ve seen it countless times, that enormous moon rising over the horizon looking impossibly large, then hours later it’s ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. The moon is getting 1½ inches (3.8 centimeters) ...

One of the best naked-eye stargazing sights of the year is on offer to skywatchers this week — if you can rise before the sun Friday (Sept. 19). Just before sunrise, the crescent moon, the brilliant ...