Moon Phases - NASA Science

The origin of the Moon: 5 theories to explain the formation of Earth’s natural satellite

What Are Moon Phases?

Giant Impact Hypothesis: An evolving legacy of Apollo

Dive into the Giant Impact Hypothesis, the leading scientific theory explaining how the Earth's Moon was born. This theory suggests that billions of years ago, a catastrophic, Mars-sized planetary body, named Theia, slammed into the early Earth, resulting in a massive collision. The resulting debris from this cosmic crash eventually coalesced to form our solitary satellite—the Moon. It's our cosmic sibling, forged in chaos! Learn the mind-blowing science behind one of the most violent events in