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| May 12, 2008 |
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Snow Like Iron Helps Maintain The Magnetic Field Of Mercury Champaign IL (SPX) May 08, 2008 
New scientific evidence suggests that deep inside the planet Mercury, iron "snow" forms and falls toward the center of the planet, much like snowflakes form in Earth's atmosphere and fall to the ground. The movement of this iron snow could be responsible for Mercury's mysterious magnetic field, say researchers from the University of Illinois and Case Western Reserve University. In a paper ... read more |
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Mercury's Shifting, Rolling Past
Blacksburg VA (SPX) Mar 18, 2008Patterns of scalloped-edged cliffs or lobate scarps on Mercury's surface are thrust faults that are consistent with the planet shrinking and cooling with time. However, compression occurred in the planet's early history and Mariner 10 images revealed decades ago that lobate scarps are among the youngest' features on Mercury. Why don't we find more evidence of older compressive features? ... more Craters In Caloris 
Laurel MD (SPX) Mar 04, 2008As MESSENGER sped by Mercury on January 14, 2008, the Narrow Angle Camera of the Mercury Dual Imaging System captured this image, which includes the edge of the planet against the blackness of space. Much of the foreground shows a portion of Caloris basin, one of the largest impact basins in the solar system. The large crater in the bottom middle of this image has a diameter of about ... more MESSENGER: Craters With Dark Halos On Mercury 
Laurel MD (SPX) Feb 25, 2008As MESSENGER flew by Mercury on January 14, 2008, the Narrow Angle Camera of the Mercury Dual Imaging System captured this view. Two of the larger craters in this image appear to have darkened crater rims and partial "halos" of dark material immediately surrounding the craters. Both craters appear to have nearly complete rims and interior terraced walls, suggesting that they ... more Messenger Team Begins Planning For Second Mercury Encounter 
Pasadena CA (JPL) Feb 08, 2008Little more than three weeks after Messenger's first historic flyby of Mercury, the team this week began mapping out its trajectory and observation plans for the probe's second pass of the planet this fall. On October 6, 2008, at 4:39 a.m. EST, the spacecraft will once again fly 200 kilometers (124 miles) above the surface of the planet. This is the second of three scheduled passes of Mercury ... more Boston University Astronomers Map Full Extent Of Mercury's Comet-Like Tail 
Boston MA (SPX) Feb 07, 2008Boston University astronomers released new images of Mercury that capture both the source regions of and, for the first time, the extraordinary length of the planet's comet-like tail. Earlier research had mapped-out Mercury's sodium gas tail to approximately 40,000 kilometers, but planetary scientists from BU's Center for Space Physics (CSP) have found that the tail can extend more than 2.5 mill ... more |
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Laurel MD (SPX) Jan 31, 2008After a journey of more than 2.2 billion miles and three and a half years, NASA's MESSENGER spacecraft made its first flyby of Mercury just after 2 p.m. EST on Jan. 14, 2008. All seven scientific instruments worked flawlessly, producing a stream of surprises that is amazing and delighting the science team. The 1,213 mages conclusively show that the planet is a lot less like the Moon than ... more A Closer Look At The Previously Unseen Side Of Mercury 
Laurel MD (SPX) Jan 29, 2008This image, taken by the Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS), shows a closer view of the territory on the previously unseen side of Mercury that was captured by MESSENGER on the 14/010/08. Just above and to the left of center of this image is a small crater with a pronounced set of bright rays extending across Mercury's surface away from the crater. Bright ray ... more Counting The Craters Of Mercury Begins 
Laurel MD (SPX) Jan 28, 2008On January 14, 2008, MESSENGER flew by Mercury and snapped images of a large portion of the surface that had not been previously seen by spacecraft. Ever since the first images were received back on Earth one day later, January 15, MESSENGER team members have been closely examining and studying this "new" terrain with great interest and excitement. One of many investigations underway inclu ... more Mercurial Colors Makes For Subtle Eye Candy 
Laurel MD (APL) Jan 22, 2008One week ago, the Messenger spacecraft transmitted to Earth the first high-resolution image of Mercury by a spacecraft in over 30 years since the three Mercury flybys of Mariner 10 in 1974 and 1975. Messenger's Wide Angle Camera (WAC), part of the Mercury Dual Imaging System (MDIS), is equipped with 11 narrow-band color filters, in contrast to the two visible-light filters and one ultraviolet fi ... more Looking Toward The South Pole Of Mercury
Baltimore MD (SPX) Jan 22, 2008One week ago, on January 14, 2008, MESSENGER passed 200 kilometers (124 miles) above the surface of Mercury and snapped the first pictures of a side of Mercury not previously seen by a spacecraft. This image shows that previously unseen side, with a view looking toward Mercury's south pole. The southern limb of the planet can be seen in the bottom right of the image. The bottom left of the ... more |
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Baltimore MD (SPX) Jan 18, 2008Shortly following MESSENGER's closest approach to Mercury on January 14, 2008, the spacecraft's Narrow Angle Camera (NAC) on the Mercury Dual Imaging System (MDIS) instrument acquired this image as part of a mosaic that covers much of the sunlit portion of the hemisphere not viewed by Mariner 10. Images such as this one can be read in terms of a sequence of geological events and provide insight ... more Messenger Reveals Mercury In New Detail 
Baltimore MD (SPX) Jan 17, 2008As NASA's MESSENGER spacecraft approached Mercury on January 14, 2008, it captured this view of the planet's rugged, cratered landscape illuminated obliquely by the sun. This image was taken from a distance of approximately 11,000 miles, about 56 minutes before the spacecraft's closest encounter with Mercury. It shows a region 300 miles across including craters less than a mile wide. The l ... more A New Face Of Mercury Revealed As Messenger Speeds By 
Laurel MD (APL) Jan 15, 2008When Mariner 10 flew past Mercury three times in 1974 and 1975, the same hemisphere was in sunlight during each encounter. As a consequence, Mariner 10 was able to image less than half the planet. Planetary scientists have wondered for more than 30 years about what spacecraft images might reveal about the hemisphere of Mercury that Mariner 10 never viewed. On January 14, 2008, the MESSENGE ... more US space probe glides over Mercury in first visit since '75 
Washington (AFP) Jan 14, 2008The US space probe soared over Mercury on Monday on a mission to unlock the mysteries of the smallest planet of the solar system which was last visited in 1975, NASA said. The MESSENGER craft flew by Mercury at around 1900 GMT, some 200 kilometers (124 miles) above the closest planet to the sun, to take up-close pictures of uncharted terrain, the US space agency said. About 55 percent of ... more Mercury After 33 Years Of Distant Glimpses 
Laurel MD (APL) Jan 14, 2008NASA has successfully conducted it's first flyby of the Planet Mercury in 33 years. At 19:04:39 UTC (2:04:39 pm EST) January 14, 2008, MESSENGER made its closest approach to Mercury, passing just 200 kilometers (124 miles) above the planet's surface. As the MESSENGER spacecraft approached Mercury, the Narrow Angle Camera, part of the Mercury Dual Imaging System (MDIS) instrument, acquired this crescent view of Mercury. The image was taken ... more
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