Moon phases reveal the passage of time in the night sky. Some nights when we look up at the moon, it is full and bright; sometimes it is just a sliver of silvery light. These changes in appearance are ...

The moon just doesn’t wander freely across the sky as it orbits our world every month. It closely, but not exactly, follows the ecliptic — the line in the sky marking the plane of Earth’s orbit around ...

As chair of the Physics Department at St. Michael’s College in Colchester, Alain Brizard anticipated that he would need to assemble answers to common questions about why total solar eclipses occur and ...

What is the moon phase today? Today, Dec. 2, 2025, the moon is 12 days old and is in the Waxing Gibbous phase of its lunar cycle. It is 90% illuminated. Moon phase Date Full Moon Dec. 4 Third/Last ...