June 13, 2011 - Long Time No See

Published in cooperation with The Planetary Society

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Recent Weeks

May 14, 2012 - Monkey Nebula

May 7, 2012 - Getting a Grip on INTELSAT

April 30, 2012 - Dust in the Wind

April 23, 2012 - Celebrate Astronomy Day

April 16, 2012 - Rover Rides Again

April 9, 2012 - Mercury’s Marvelous Morphology

April 2, 2012 - A Matter of Truss

March 26, 2012 - Hubble Bubble

March 19, 2012 - Rocket Pioneer Centennial

March 12, 2012 - Southern Lights on Saturn

March 5, 2012 - A New Star in Town

February 27, 2012 - Hubble Upgrade

February 20, 2012 - Sideways Supernova

February 13, 2012 - Auroras Gone Wild

February 6, 2012 - Hubble Telescope Tune-Up

January 30, 2012 - Lunar Orbiter Liftoff

January 23, 2012 - Magellan Turns up the Stereo

January 16, 2012 - Southern Sibling Sees Stars

January 9, 2012 - Hitching a Ride Home

January 2, 2012 - Transforming the Space Frontier

December 26, 2011 - These Laws Can't Be Broken

December 19, 2011 - Long and Winding Road

December 12, 2011 - Blast from the Past

December 5, 2011 - It’s Just Like Folding a Map

November 28, 2011 - A Warmer, Wetter Mars

November 21, 2011 - Spy in the Sky

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The Week in Space

June 13-19, 2011

Long Time No See In 1975, when it completed its third and final flyby of Mercury, Mariner 10 had the distinction of being the only spacecraft ever to explore the closest planet to the Sun. More than three decades would pass before another emissary from Earth encountered this cratered and sun-baked world. In early 2008, the MESSENGER spacecraft flew within 120 miles of Mercury, examining regions of the planet that had not been visible to Mariner 10. This spectacular color mosaic shows the eastern limb of Mercury as seen by MESSENGER on the departing leg of its 2008 flyby. The false colors in this image convey information about the distribution of different rock types on the planet’s surface. Two subsequent flybys put MESSENGER on a course to begin orbiting Mercury in March, 2011.

Image credit:NASA / JHU APL / Carnegie Institution of Washington