1
Not all full Moons are the same size. Their size varies depending on whether the Moon is at its apogee (far away) or perigee (nearby).
3
The Moon’s core is 2-4% of its mass, whereas Earth’s core is about 30% of its mass.
4
When the Moon formed 4.6 billion years ago, it was 14,000 miles from Earth. Now it’s more than 280,000 miles away.
5
Because the surface of the Moon has no wind or water, an astronaut’s footprint could last for millions of years.