the best science on the web about
Neptune

Neptune: The Outermost Planet
Image: NASA

Neptune: The Outermost Planet

Neptune's nearly 4x the size of Earth but you need a telescope to see this 8th and outermost planet in our solar system. At that distance, it takes 165 Earth years for Neptune to make one trip around the Sun.

Explore this frigid ice giant that has 6 rings, 13 moons, and a magnetic field 27x more powerful than Earth's.

National Geographic
‘8 Planets and a Dwarf’ Sudoku

‘8 Planets and a Dwarf’ Sudoku

Love puzzles? This online Sudoku-like puzzle involves all the planets of the solar system, plus Pluto. Featuring 5 levels, you can start with “very easy” and work your way up to “extra challenging.” More...

Game
Windows to the Universe
Spotty Blue Planet

Spotty Blue Planet

Leopards don't change their spots...but Neptune does. Frequently. Are the planet's supercharged winds, which roar around the equator at nearly twice the speed of sound, the cause? More...

Video
National Geographic
Heidi Hammel: Becoming an Astronomer

Heidi Hammel: Becoming an Astronomer

Today she's one of the foremost experts on Uranus and Neptune...but as a college student, Hammel almost dropped her first astronomy course. Watch her story. More...

Profile
Big Think
Images of Neptune

Images of Neptune

Neptune may be the farthest planet from the Sun, but Voyager 2 flew above the gas giant's north pole in the summer of 1989. Check out the images the space probe sent back. More...

Images
JPL/NASA
Neptune Quiz

Neptune Quiz

Like Earth, Neptune appears blue — but for very different reasons. How well do you know the other blue planet? More...

Interactive
Space.com
Neptune’s Lost Inner Moon Found

Neptune’s Lost Inner Moon Found

This story gives new meaning to "lost in space." After nearly 25 years, scientists have once again spotted Naiad, Neptune's tiny, innermost moon. More...

Images
Science News for Students
Neptune’s Moons and Rings

Neptune’s Moons and Rings

Triton is Neptune's largest moon, but it's not the closest. Or the farthest. See how the planet's 13 moons stack up. Then discover why Neptune's rings are much darker than the ones circling Saturn. More...

Article
Windows to the Universe
Photos of Neptune, The Mysterious Blue Planet

Photos of Neptune, The Mysterious Blue Planet

You'll find labeled orbits of Neptune's moons to infrared photos to an infographic look inside the gas giant in this information-rich gallery. More...

Images
Space.com
Solar System Exploration: Neptune

Solar System Exploration: Neptune

Using the mathematical predictions of Urbain Le Verrier, Johann Galle found Neptune in 1846. Keeping with astronomical tradition, the planet was named for the Roman god of the sea. More...

Article
NASA
Solar System Exploration: Triton

Solar System Exploration: Triton

Unlike Earth's moon (or other large moons in our solar system), Triton doesn't share the rotation of its planet. Neptune's largest moon has a retrograde orbit, moving in the opposite direction. More...

Article
NASA
The Poles of Neptune and Its Moons

The Poles of Neptune and Its Moons

Looking for the warmest place on Neptune? Head to the planet's South Pole. But head to the same pole on Triton, Neptune's largest moon, and you might just spot an ice volcano. More...

Article
Windows to the Universe

Latest Comments

You Also Might Like

  1. Kuiper Belt

    Kuiper Belt

  2. lunar eclipses

    lunar eclipses

  3. Mars

    Mars

  4. Saturn

    Saturn

  5. solar eclipses

    solar eclipses