Our Moon - The Moon feels constant and calm, but it has a surprisingly dramatic past—and an even stranger present. From slowly escaping Earth’s grip to preserving ancient footprints, the Moon is far more active and mysterious than it looks. 

Here are some fascinating facts that make our Moon way cooler than it gets credit for:

• The Moon’s surface is covered in regolith - A layer of fine dust and broken rock created by billions of years of meteorite impacts. The dark areas are made mostly of basalt, formed from ancient volcanic lava flows. The bright highlands are mainly anorthosite, one of the oldest types of rock in the solar system.

• It’s drifting away from Earth - The Moon moves about 3.8 cm (1.5 inches) farther from Earth every year. Long ago, it appeared much larger in the sky—and far in the future, it’ll look noticeably smaller.

• We don’t actually see just one side - Although the Moon is tidally locked to Earth, a gentle wobble called libration lets us see about 59% of its surface over time.

• The “dark side” isn’t dark at all - Both sides of the Moon get sunlight. The far side is just permanently hidden from Earth and wasn’t photographed until 1959.

• The Moon has moonquakes - Caused by Earth’s gravity and the Moon’s cooling interior, moonquakes can last up to 10 minutes, much longer than typical earthquakes.

• It once had a magnetic field - Billions of years ago, the Moon had a strong magnetic field, meaning it was once hotter, more active, and more Earth-like than it is today.

• Footprints can last millions of years - With no wind or rain, astronaut footprints on the Moon could remain almost unchanged for millions of years—unless disturbed by meteor impacts or future explorers.

• It controls Earth’s tides—and tugs on you too - The Moon’s gravity moves oceans, slightly flexes Earth’s crust, and even exerts a tiny pull on your body (though not your emotions).

• It likely formed from a massive collision - The leading theory is that a Mars-sized object collided with early Earth, and the debris eventually formed the Moon—making it a relic of a violent cosmic event.