The Moon's phases are caused by changing amounts of sunlight reflecting off its surface as it orbits Earth. Lunar eclipses happen during a Full Moon when Earth is between the Sun and Moon. Solar ...

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 ...

December's full moon, known as the Cold Moon, illuminates the longest nights of the year. Despite its name, the moon doesn't cause the chill; Earth's tilt away from the sun brings winter's cold. This ...

Some urban legends claim that the phases of the moon can affect children's sleep patterns, but the research doesn't back up that claim Instead of blaming the moon for disruptions in your child's sleep ...

Today, Dec. 20, 2025, the moon is 0 days old and is in the New Moon phase of its lunar cycle. It is 0% illuminated.