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 ...

Without the moon, life on Earth might not even be possible. At one quarter the diameter of the Earth and one sixth its gravity, our celestial neighbor plays a critical role in setting marine-life ...

While orbiting Earth, the moon undergoes a series of phases, each marked by its unique appearance in the sky The moon has captivated humanity since the beginning of time, but what deeper significance ...

What is the moon phase today?Today, Dec. 31, 2025, the moon is 11 days old and is in the Waxing Gibbous phase of its lunar cycle. It is 91% illuminated.December 2025 moon phases and datesMoon ...