Mercury’s Hot Flow Revealed by MESSENGER

by Jason Major June 18, 2014

Want to stay on top of all the space news? Follow @universetoday on Twitter Our Sun is constantly sending a hot stream of charged atomic particles out into space in all directions. Pouring out from holes in the Sun’s corona, this solar wind flows through the Solar System at speeds of over 400 km/s (that’s 893,000 mph). When […]

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Mercury’s Ready For Its Close-Up, Mr. MESSENGER

by Jason Major May 15, 2014

Are you ready for a good close look at Mercury? At an incredible 5 meters per pixel, this is one of the highest-resolution images of Mercury’s surface ever captured. It was acquired on March 15 with the MESSENGER spacecraft’s MDIS (Mercury Dual Imaging System) instrument and shows an 8.3-km (5.2-mile) -wide section of Mercury’s north polar region, […]

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Mercury Had Quite The Explosive Past, Spacecraft Analysis Shows

by Elizabeth Howell April 9, 2014

Mercury — a planet once thought to have no volcanism at all — likely had a very active past, a new analysis of images from NASA’s MESSENGER spacecraft shows. After looking at 51 vents across Mercury, the team concluded that they show different amounts of erosion — hinting that the explosions happened at different times […]

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Mercury Shrinking: the First Rock from the Sun Contracted More than Once Thought

by Jason Major March 16, 2014

Whatever Mercury’s did to trim down its waistline has worked better than anyone thought — the innermost planet in our Solar System has reduced its radius* by about 7 kilometers (4.4 miles), over double the amount once estimated by scientists. Of course you wouldn’t want to rush to begin the Mercury diet — its planetary […]

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Weekly Space Hangout – February 14, 2014: Space Valentines!

by Fraser Cain February 14, 2014

Host: Nicole Gugliucci Astrojournalists: Morgan Rehnberg, Brian Koberlein Remove this ad Fraser Cain on Google+

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