Spheres of Earth
Outer Space

The 17 Spheres of Earth

How many spheres of Earth exist on Earth? If you count them all, you would get about 17 of them. This is the definitive guide to all 17 spheres of Earth. […]

What Color Is the Moon
Moon

What Color Is the Moon?

The color of the moon is mostly grey. And the lunar maria are dark grey. The 4 most dominant rocks are: mare basalts, breccia, anorthosite and regolith. […]

How Big Is the Moon
Moon

How Big Is the Moon?

How big is the moon? It’s about 1/4 (27%) the size in diameter of Earth. Alternatively, you can think of the moon being about as wide as the United States. […]