Mercury
Mercury, the planet nearest the Sun, is also the smallest planet in the Solar System. Only slightly larger than the Earth's moon, Mercury's surface is covered with craters. This tiny planet does not have any rings or moons.
Visit another planet: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Dwarf Planets
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Explore Mercury
Mercury's Interior and Surface
Mercury, the innermost planet of the solar system, is a little bigger than the Earth's Moon. ...Read more
Atmosphere of Mercury
Mercury has very little atmosphere. The planet's small size means that its gravity is too weak ...Read more
Magnetosphere of Mercury
Mercury is the only terrestrial planet other than the Earth that has a significant magnetic ...Read more
Mercury's Poles
If Uranus is the "tilted planet", Mercury might be called the "upright planet". The spin axis ...Read more
Planetary Facts
All of the relevant information about Mercury collected on one page, including details about size, orbit ...Read more
Myth and Culture
Here are two stories about Mercury, one of the gods in the Roman pantheon. Mercury was identified ...Read more
Missions to Mercury
A table containing information about the spacecraft that have visited Mercury ...Read more
Images and Multimedia
Access wonderful captioned photos and illustrations that will inspire and excite you. ...Read more
Mercury Links
These are links to other great web sites about Mercury. But beware: you don't want to get ...Read moreMore about Mercury
Did you know?
Did you know that the Sun's poles rotate more slowly than the Sun's equator?Do you know what a circumpolar constellation is?
Earth and Space Science Concept of the Day
Do you know what this word or phrase means?Allotropes
xAllotropes : Forms of an element with different structures and properties when they are in the same state - solid, liquid, gas
Click on the word to find out!
Research Highlights
New Findings Indicate Sediment Composition Affected the Strength of Sumatran Earthquake
Sumatra experiences frequent seismic activity because it is located near the boundary of two of Earth's tectonic plates. Earthquakes occur at 'subduction zones,' such as the one west of Indonesia, when...Read more
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