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 …

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.

Sep 17, 2025 · Like Earth, the Moon has a day side and a night side, which change as the Moon rotates. The Sun always illuminates half of the Moon while the other half remains dark.

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

3 days ago · The next full supermoon, also known as the Wolf moon, will happen on Jan. 3.

5 days ago · Cold Moon rising: How to see December’s supermoon, the last full moon of 2025 December’s full moon will shine brighter as it nears perigee, its closest point to Earth. The …

Nov 27, 2025 · 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 …

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 …

6 days ago · Research shows a full moon can modestly affect sleep, but its influence on mental health is much less certain. November's full Beaver Moon will occur on Nov. 5 and will be the …

What is the moon made of, and how did it form? Learn about the moon's violent origins, how its phases shaped the earliest calendars, and how humans first explored Earth's only natural …