In geophysical terms, the Moon is a planetary-mass object or satellite planet. Its mass is 1.2% that of the Earth, and its diameter is 3,474 km (2,159 mi), roughly one-quarter of Earth's (about as …

1 day ago · Moon, Earth’s sole natural satellite and nearest celestial body. Known since prehistoric times, it is the brightest object in the sky after the Sun. Its name in English, like that …

Jun 25, 2025 · The Earth and Moon are tidally locked. Their rotations are so in sync we only see one side of the Moon. Humans didn't see the lunar far side until a Soviet spacecraft flew past …

4 days ago · December cold moon was the last supermoon of 2025: What to know about the celestial event The last supermoon of 2025 lit up the night sky on Dec. 4.

6 days ago · Are you ready to brave the cold for 2025’s final supermoon display? The aptly named “Cold Moon” will peak on Thursday night, so read on to see which parts of the U.S. will have …

3 days ago · The Cold Moon, the 12th and final full moon of 2025, rose on Thursday (Dec. 4) but will still appear bright and full on Friday (Dec. 5)

6 days ago · December’s full cold supermoon is peaking this week as the anniversaries of two Apollo missions approach.

5 days ago · With our 2025 Moon Phase Calendar, you'll find the current Moon phase for tonight—plus, all the phases of the Moon for each day of the month.

6 days ago · This is the biggest and brightest December Supermoon we've seen in nearly 17 years! Eyes to the sky this week to see the Full Cold Supermoon, which is last Full Moon of …

Find the Moon’s illumination, distance, and latitude for any time on any date. The Moon has four primary and four intermediate lunar phases during a lunar month. Here's all you need to know …