In A.D. 725, he tracked the moon’s peculiar movements as it rose back and forth along the eastern horizon, in a faster cycle ...

Today, March 24, 2025, the moon is 24 days old and is in the Waning Crescent phase of its lunar cycle. It is 30% illuminated. Don't miss the upcoming total solar eclipse on March 29! Moon phase ...

A new moon occurs when the moon is directly between Earth and the sun, with its shadowed side pointing towards us. You can see a new moon when it crosses the face of the sun during a solar eclipse.

A total lunar eclipse occurs when the Earth is positioned directly between the moon and sun, blocking the sun's rays from the moon.

Did you know both the astronomical first day of spring and Easter Sunday are tied to the spring equinox? How they relate, what to know for spring 2025.