Explore Mercury
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Mercury, the innermost planet of the solar system, is a little bigger than the Earth's Moon. ...
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Mercury has very little atmosphere. The planet's small size means that its gravity is too weak ...
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![](/images/icons/mercury_magnetosphere.jpg)
Mercury is the only terrestrial planet other than the Earth that has a significant magnetic ...
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If Uranus is the "tilted planet", Mercury might be called the "upright planet". The spin axis ...
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All of the relevant information about Mercury collected on one page, including details about size, orbit ...
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Here are two stories about Mercury, one of the gods in the Roman pantheon. Mercury was identified ...
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A table containing information about the spacecraft that have visited Mercury ...
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Access wonderful captioned photos and illustrations that will inspire and excite you. ...
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These are links to other great web sites about Mercury. But beware: you don't want to get ...
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Did you know?
Did
you know that a
high
speed wind continuously blows off the
Sun,
carrying with it
plasma
that interacts with planetary environments, including Earth?
Did you know that the lights
of the aurora come in different colors, depending on the energy of the
particles that produce the aurora?
Earth and Space Science Concept of the Day
Do you know what this word or phrase means?
LaharxLahar : A mudflow or landslide composed of pyroclastic material and water that flows down from a volcano, typically along a river valley. Lahars can be huge, fast, and deadly.
Click on the word to find out!
Research Highlights
Current observational tools cannot account for roughly half of the heat that is believed to have built up on Earth in recent years, according to a "Perspectives" article in this week's issue of the journal...
Read more![](/olpa/images/missing_heat1_h.jpg)