Neptune is the eighth and final planet in the solar system. No, I haven't forgotten about Pluto! Pluto is currently classified as a dwarf planet. Did you know that sometimes Pluto is closer to the sun than Neptune? Neptune was the first planet to be discovered with math, and was the final objective of the Voyager 2 probe, which visited it in 1989.

Uranus is a planet beyond convention. Find out why it boasts the coldest temperatures in the solar system, what phenomena caused the unique tilt of its axis, and the curious origin of the planet's name.

How did the rings around Saturn form? How many moons does the planet have? See stunning NASA images of the gas giant studied by Christian Huygens and Giovanni Cassini.

Jupiter is the largest planet in the solar system, more than twice as massive as all of the other planets put together! The third-brightest object in the night sky, it's made of gasses, it has more than 60 moons, and it's the stormiest planet in the solar system. Jupiter is amazing!

From its blood-like hue to its potential to sustain life, Mars has intrigued humankind for thousands of years. Learn how the red planet formed from gas and dust and what its polar ice caps mean for life as we know it.

Ice has been found on Mercury! What's the climate like? What about the atmosphere itself? Could there be life? Learn more here!

The second planet from the sun, Venus is the brightest planet visible from earth. Known throughout the centuries for its beauty, the surface Venus is actually a hostile environment of heat, pressure, and toxic atmosphere.

Our home plane Earth is the third planet from the sun. We have one moon, liquid water, and life! Earth is the only planet we know suitable for life, so let's take care of it, shall we? Learn about the layers of the earth, what our atmosphere does for us, and why years and days are the lengths they are.