Articles

Grand Canyon Age

How Was the Grand Canyon Formed?

Like a stack of pancakes, younger rock layers pile on top of older layers. We use the law of superposition to reveal Earth’s age and Grand Canyon geology.

Moon

9 Facts About the Moon

Earth’s moon was formed at the same time that Earth did. Interesting moon facts include its gravity is 1/6 of Earth and temperature range of -173°C to 127°C

Giant Impact Hypothesis

How Did the Moon Form?

The giant impact hypothesis models the formation of our moon. It starts with a Mars-sized object hitting Earth. This object (moon) still remains in orbit.

Sun Composition

5 Facts About the Sun [Infographic]

Today, we’re exploring facts about the sun. First, you have to realize the enormous size of the sun. It’s so big that nearly 1300 Jupiters can fit the sun!

Hubble Galaxy Classification

What Are the 3 Types of Galaxies?

Hubble galaxy classification assigns a class to galaxies based on their visual appearance. These classes of galaxies are ellipticals, lenticulars and spirals