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The Earth Scientist, Volume XXVI, Issue 1, Spring 2010
This very special issue of The Earth Scientist (our biggest ever!) is sponsored by the Cooperative Institute for Climate and Ocean Research at the Woods Hole Oceanographic Institution and is focused on the world’s oceans....more
Mercury's Poles
Some planets are tilted so their North and South Poles are not straight up and down. Earth is tilted a bit - about 23°. Uranus is tilted a lot - more than 90°. Mercury, on the other hand, is hardly tilted...more
The Magnetic Poles of Mercury
Mercury has a magnetic field. Its field is weak. Earth's magnetic field is tilted, and so is Mercury's. That means Mercury's magnetic poles are not in the same place as its geographic poles. Mercury has...more
Atmosphere of Mercury
Mercury has almost no atmosphere. The planet's small size means that its gravity is too weak to hold down a normal atmosphere. There is a very thin atmosphere around the planet. Mercury's thin atmosphere...moreMagnetosphere of Mercury
Mercury is the only inner planet other than the Earth that has a significant magnetic field (220 nT). This field, along with the planet's high density and small size relative to the Earth, indicates that...moreShop Windows to the Universe
With our Traveling Nitrogen Classroom Activity Kit, students play the role of nitrogen atoms in the nitrogen cycle. Check out other educational products in our online store.
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Star Stuff: science news from an astronomer's perspective
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