shield volcano
Geology

What is a Shield Volcano?

The name “shield volcano” originated from its Roman shield-like shape. They are broad, flat and can stretch hundreds of miles wide like Mauna Loa in Hawaii. […]

Magnetosphere
Atmosphere

A Guide to the Magnetosphere

Earth’s magnetic field gives us a layer out in space called the magnetosphere. If you want to learn everything about magnetosphere, this is the complete guide. […]

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. […]

Troposphere
Atmosphere

What Is the Troposphere?

The troposphere is the lowest layer of the atmosphere. It starts at ground level and extends upwards to about 13 km. All weather occurs in the troposphere. […]

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. […]

Lahar
Geology

Lahar: Flowing Mud at Volcanoes

“Lahar” is an Indonesian word for mudflow at volcanoes. Lahar flows down volcanoes as a mix of mostly water, mud and rock debris (similar to wet concrete). […]