Catch the soft glow of earthshine as a young crescent moon appears low after sunset.

If the Moon looks different tonight than it did yesterday, that’s because it’s moving through the lunar cycle. As it orbits ...

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 ...