Messenger orbital data confirm theories, reveal surprises

On March 18, 2011, the MESSENGER spacecraft entered orbit around Mercury to become that planet's first orbiter. The spacecraft's instruments are making a complete reconnaissance of the planet's geochemistry, geophysics, geologic ...

Chemistry on Mars reveals cooling rate

(PhysOrg.com) -- French researchers from the University of Toulouse have published a paper in Nature, that describes how they used data from NASA's Mars Odyssey (currently orbiting the planet) to ascertain the amount of cooling ...

Arctic ice at low point compared to recent geologic history

Less ice covers the Arctic today than at any time in recent geologic history. That's the conclusion of an international group of researchers, who have compiled the first comprehensive history of Arctic ice.

Fossil find fills in picture of ancient marine life

Paleontologists have discovered a rich array of exceptionally preserved fossils of marine animals that lived between 480 million and 472 million years ago, during the early part of a period known as the Ordovician. The specimens ...

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