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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![](/images/icons/mercury_atmosphere.jpg)
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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![](/images/icons/mercury_facts.jpg)
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?
Do you know the difference between
meteors, meteoroids, and meteorites?
Do you know the difference between weather and climate?
Earth and Space Science Concept of the Day
Do you know what this word or phrase means?
RefractionxRefraction : Refraction is the deflection, or bending, of the ray path of a seismic wave caused by its passage from one material to another having different elastic properties; or the bending of a tsunami wave front owing to variations in the water depth along a
Click on the word to find out!
Research Highlights
Conservation efforts aimed at protecting endangered Caribbean corals may be overlooking regions where corals are best equipped to evolve in response to global warming and other climate challenges. That's...
Read more![](/olpa/images/coral_endangered_small.jpg)