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 satellite half a … Discover the moon phase calendar 2026.

We see the full moon when the sun is directly behind us, illuminating a full hemisphere of the moon when it is directly in front of us. 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 about each … 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 wide as the …

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 wide as the …