Planets

All About Pluto

Pluto is now categorized as a dwarf planet.

NASA Coloring Pages

Color and learn about some faraway worlds with these coloring pages!

How Do We Weigh Planets?

We can use a planet’s gravitational pull like a scale!

Searching for Other Planets Like Ours

Exoplanets are far away and hard to see. How do we look for them?

Make a Planet Mask!

Make a mask and pretend to be your favorite planet in our solar system!

Why Are Planets Round?

And how round are they?

All About Neptune

The coldest planet in our solar system

All About Uranus

The planet that spins on its side

All About Saturn

The planet with beautiful rings

All About Jupiter

The biggest planet in our solar system

All About Mars

The red planet

All About Earth

The planet with living things

All About Venus

The hottest planet in our solar system

All About the Planets

Learn more about the planets in our solar system

All About Mercury

The smallest planet in our solar system

How Long Is One Day on Other Planets?

Learn to make a graph with the answer!

How Many Moons Does Each Planet Have?

We have one, but some planets have dozens.

What's It Like Inside Jupiter?

Jupiter's core is very hot and is under tons of pressure!

A Planet Without a Sun?

Astronomers may have found a planet without a sun!

Space Volcanoes!

Explore the many volcanoes in our solar system using the Space Volcano Explorer.

What Is a Barycenter?

And how does it help us find new planets?

Why does Saturn have rings?

And what are they made of?