Geographic Poles
Outer Space

Where is the North and South Pole?

If you stick a pencil through Earth at the point of rotation, these 2 points are the north/south poles. Geographically, it’s where longitude lines converge. […]

Outer Space

A Guide to Earth’s Lithosphere

Earth scientists compare the lithosphere to a thin, solid and brittle eggshell encasing our inner planet or a thick piece of wood that dries and breaks. […]

Outer Space

How To Define the Geosphere

It’s difficult to pinpoint an exact definition for the “geosphere” because it’s used in several different ways. But here are 2 ways to define the geosphere. […]

How Gravity Works
Outer Space

How Gravity Sculpted the Earth

What brings order on Earth is gravity. For all matter, it’s always at work. This is how gravity works for ocean tides, planet formation and escape velocity. […]

Goldilocks Zone
Outer Space

What is the Goldilocks Zone?

Lucky for us, Earth is in the Goldilocks zone. The range where liquid water persists is 0.99 to 1.7 AU. But it doesn’t necessarily mean life or water exists. […]

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
Outer Space

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
Outer Space

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 […]