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All Articles Tagged As: mercury

Mercury not like other planets MESSENGER finds (10/9/2011)

The MESSENGER spacecraft has shown scientists that Mercury doesn't conform to theory. Its surface material composition differs from both those of the other terrestrial planets and expectations prior to the MESSENGER mission, calling into question current theories for Mercury's formation. Its magnetic field is unlike any other in the solar system, and there are huge expanses of volcanic plains surrounding the north polar region of the planet and cover more than 6 percent of Mercury's surface. ...> Full Article



Epic volcanic activity flooded Mercury's north polar region (10/4/2011)

Epic volcanic activity flooded Mercury's north polar regionPlanetary scientists at Brown University and participating institutions have discovered vast, smooth plains around Mercury's north pole that were created by volcanic activity more than 3.5 billion years ago. The lava flows were epic: They filled craters more than a mile deep and cover 6 percent of Mercury's surface, an area that would cover nearly 60 percent of the continental United States, the scientists write in the journal Science. ...> Full Article


Messenger orbital data confirm theories, reveal surprises (6/26/2011)

In March, the Messenger spacecraft entered orbit around Mercury to become that planet's first orbiter. The tiny craft is providing a wealth of new information and some surprises. For instance, Mercury's surface composition differs from that expected for the innermost of the terrestrial planets, and Mercury's magnetic field has a north-south asymmetry that affects the interaction of the surface with charged particles from the solar wind. ...> Full Article



Space scientists ready for orbital insertion of Mercury spacecraft (3/23/2011)

Space scientists ready for orbital insertion of Mercury spacecraft NASA's MESSENGER mission launched in 2004 is slated to slide into Mercury's orbit March 17 after a harrowing 4.7 billion mile journey that involved 15 loops around the sun and will bring relief and renewed excitement to the University of Colorado Boulder team that designed and a built an $8.7 million instrument on board. ...> Full Article



MESSENGER spacecraft to swing into orbit around Mercury (3/18/2011)

MESSENGER spacecraft to swing into orbit around MercuryThe MESSENGER spacecraft is scheduled to go into orbit around Mercury on March 17. The mission is an effort to study the geologic history, magnetic field, surface composition and other mysteries of the planet. The findings are expected to broaden our understanding of rocky planets in other solar systems. ...> Full Article


The first mission to Mercury (2/6/2011)

As the team of scientists behind NASA's MESSENGER spacecraft eagerly awaits the craft's entry into Mercury's orbit on March 17, we could soon get answers to questions about the origin, composition, interior structure and geological history of this mysterious planet.Louise Prockter, deputy project scientist on the mission, writes exclusively in February's Physics World about the challenges the craft has been designed to face, the early successes of the mission and her own triumphant voyage over the past decade's work. ...> Full Article



ESA's Mercury mapper feels the heat (1/29/2011)

ESA's Mercury mapper feels the heatKey components of the ESA-led Mercury mapper BepiColombo have been tested in a specially upgraded European space simulator. ESA's Large Space Simulator is now the most powerful in the world and the only facility capable of reproducing Mercury's hellish environment for a full-scale spacecraft. ...> Full Article


Mercury found to have comet-like appearance by satellites looking at sun (9/27/2010)

Scientists from Boston University's Center for Space Physics reported today that NASA satellites designed to view the escaping atmosphere of the Sun have also recorded evidence of gas escaping from the planet Mercury. The scientists reported these findings at the European Planetary Science Congress meeting in Rome, Italy, this week. ...> Full Article



New revelations about Mercury's volcanism, magnetic substorms and exosphere from MESSENGER (7/16/2010)

New revelations about Mercury's volcanism, magnetic substorms and exosphere from MESSENGERAnalysis of data from MESSENGER's third and final flyby of Mercury in September 2009 has revealed evidence of younger volcanism on the innermost planet than previously recognized, new information about magnetic substorms, and the first observations of emission from an ionized species in Mercury's very thin atmosphere or exosphere. ...> Full Article



Space scientists set for final spacecraft flyby of Mercury (10/2/2009)

Space scientists set for final spacecraft flyby of MercuryNASA's MESSENGER spacecraft, which is toting an $8.7 million University of Colorado at Boulder instrument, will make its third and final flyby of Mercury on Sept. 29 -- a clever gravity-assist maneuver that will steer it into orbit around the rocky planet beginning in March 2011. ...> Full Article



Magnetic tornadoes could liberate Mercury's tenuous atmosphere (6/3/2009)

Magnetic tornadoes could liberate Mercury's tenuous atmosphereMercury is scorching hot, with daytime temperatures of more than 800 degrees Fahrenheit. Its hard for the planet to hold on to its atmosphere, which is extremely thin, and invisible to the human eye. However, it can be seen by special instruments attached to telescopes and spacecraft like MESSENGER. ...> Full Article



Researchers use multispectral images to reveal origin and evolution of planet Mercury (5/7/2009)

Researchers use multispectral images to reveal origin and evolution of planet MercuryUsing high-resolution and multispectral images, researchers have started the difficult process of determining the composition of Mercury's crust and chronicling its origin and evolution. ...> Full Article


Scientists detect magnesium in MESSENGER flyby of Mercury (5/4/2009)

NASA's MESSENGER spacecraft served up another curveball to a University of Colorado at Boulder team after a second flyby of the hot inner planet Oct. 6 detected magnesium -- an element created inside exploding stars and which is found in many medicine cabinets on Earth -- clumped in the tenuous atmosphere of the planet. ...> Full Article


MESSENGER discovers an unusual impact basin on Mercury (5/4/2009)

MESSENGER discovers an unusual impact basin on MercuryA previously unknown, large impact basin has been discovered by the MESSENGER spacecraft during its second flyby of Mercury in October 2008. The impact basin, now named Rembrandt, more than 700 kilometers (430 miles) in diameter. If the Rembrandt basin had formed on the east coast of the United States, it would span the distance between Washington, D.C., and Boston. ...> Full Article


Mercury's 'Spider' Pantheon Fossae Formation Linked To Asteroid Impact (9/30/2008)

Mercury's 'Spider' Pantheon Fossae Formation Linked To Asteroid ImpactThe Pantheon Fossae, a radiating web of troughs located in the giant Caloris Basin of Mercury, is directly linked to an impact crater at the centre of the web. ...> Full Article


Mercury's surface dominated by volcanic activity (7/5/2008)

Mercury's surface dominated by volcanic activityVolcanism has played a more extensive role in shaping the surface of Mercury than scientists had thought. This result comes from multispectral imaging data gathered in January 2008 by MESSENGER, the latest spacecraft to visit the sun's innermost planet. ...> Full Article


Iron 'snow' helps maintain Mercury's magnetic field, scientists say (5/9/2008)

Iron 'snow' helps maintain Mercury's magnetic field, scientists sayNew 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. ...> Full Article


Mercury's shifting, rolling past (3/18/2008)

Mercury's shifting, rolling pastSimulation reveals possible cause of Mercury's distinctive features ...> Full Article


Mercury's magnetosphere fends off the solar wind (2/2/2008)

The planet Mercury's magnetic field appears to be strong enough to fend off the harsh solar wind from most of its surface, according to data gathered in part by a University of Michigan instrument onboard NASA's MESSENGER spacecraft. ...> Full Article


Mercury In Color (1/24/2008)

Mercury In ColorOne 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 filter that were on Mariner 10's vidicon camera. ...> Full Article


Europe's Mercury mission swings into action (1/19/2008)

Europe's Mercury mission swings into actionThe European Space Agency (ESA) signalled the start of a busy period for the planet Mercury, when it signed the contract for industrial development to start for the BepiColombo mission today (18th January 2008) at Astrium in Friedrichshafen, Germany. UK scientists and industry have key roles in BepiColombo, including construction of spacecraft subsystems and science instrument design. ...> Full Article


First Look at Mercury's Previously Unseen Side (1/17/2008)

First Look at Mercury's Previously Unseen Side When 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. ...> Full Article


Space Scientists Ready For Messenger Mission Flyby Of Mercury (1/14/2008)

Space Scientists Ready For Messenger Mission Flyby Of MercuryNASA will point a power-packed $8.7 million University of Colorado at Boulder space instrument at some of the last unexplored terrain in the inner solar system when the MESSENGER spacecraft whips within 125 miles of Mercury's surface Jan. 14 at a mind-boggling 141,000 miles per hour. ...> Full Article


MESSENGER Only One Week from Mercury (1/8/2008)

MESSENGER Only One Week from MercuryMESSENGER's mid-December trajectory correction maneuver (TCM-19) went so well that the mission's design and navigation teams have decided that a TCM scheduled for January 10 will not be needed. ...> Full Article


Planetary geologist part of NASA's Messenger mission to Mercury (12/26/2007)

NASA has selected Case Western Reserve University geophysicist Steven A. Hauck II as one of 23 "participating scientists" to join a team collecting and analyzing data from the MESSENGER mission to Mercury. MESSENGER, an autonomous spacecraft, is expected to reach the innermost planet in January. ...> Full Article


Geminid meteors adorn December sky (12/3/2007)

The annual Geminid meteor shower will peak on the night of Dec. 13-14. The Geminids usually offer the best show of the year, outperforming even the better-known Perseid meteor shower of August. But watching the Perseids is a pleasant way to spend a warm summer evening, while waiting outdoors on a winter night for Geminids is a bit like sitting in a refrigerator and trying to think about global warming. It can be hard to concentrate. ...> Full Article

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