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Mercury

Mercury
Image: NASA/JHU

Mercury

Mercury is a tortured world. Closest to the Sun, the planet suffers extreme temperatures. With little atmosphere to burn up celestial debris, Mercury’s surface is scarred from countless collisions with comets.

NASA’s Messenger spacecraft offers new photos and data about this pockmarked planet, which is the smallest in our solar system.

Science Channel
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‘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
Mercury’s Light Show

Mercury’s Light Show

Care to visit Mercury? You'd be treated to nightly spectacular light shows. The downside? Roasting in the 840° heat. During the day, the Sun appears nearly 3 times larger than it does on Earth. More...

Video
National Geographic
Explore Mercury

Explore Mercury

Unlike Earth, which is tilted 23° on its axis, Mercury is hardly tilted at all. The planet has no seasons as a result. Find out more about its poles, magnetosphere, and interior. More...

Article
Windows to the Universe
Ice on Mercury

Ice on Mercury

NASA’s Messenger spacecraft has found evidence of ice on Mercury. Researching how the water arrived on this fiery hot planet may help us understand how life began on Earth. More...

Article
Science News for Students
Latest Photos of Mercury from NASA’s Messenger Probe

Latest Photos of Mercury from NASA’s Messenger Probe

The first probe to orbit Mercury, NASA’s Messenger has snapped more than 200,000 photos of the tiny planet. Check out these images of Mercury's craters, polar regions, and ice deposits. More...

Images
Space.com
Mercury, the Sun’s Closest Planetary Neighbor

Mercury, the Sun’s Closest Planetary Neighbor

Mercury has no significant atmosphere to stop impacts, which is why the planet is pockmarked with craters. Examine Mercury's unique traits, including its huge metallic core. More...

Article
Space.com
NASA’s Messenger

NASA’s Messenger

Get details about the spacecraft and its pioneering journey, planetary flybys, and instruments designed to operate in extreme temperatures. More...

Article
JHU Applied Physics Laboratory
Planet Mercury: Simple Facts, Tough Quiz

Planet Mercury: Simple Facts, Tough Quiz

Think you know the closest planet to the sun? Test your Mercury smarts with this quiz. More...

Interactive
Space.com
Solar System Exploration: Mercury

Solar System Exploration: Mercury

Mercury orbits the sun every 88 days. One day on the sun-scorched planet lasts 59 Earth days. Discover more facts about this moonless planet. More...

Article
NASA

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