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»» Upcoming Mercury/Sun Transit Whets the Appetite for MESSENGER Discoveries
[Monday, November 6, 2006] Mercury transits don't happen very often. The last was on May 7, 2003, and the next doesn't come until May 9, 2016. The event underscores the importance of the NASA's Mercury-bound MESSENGER spacecraft.
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»» Mercury transit foreshadows future planet hunt
[Monday, November 6, 2006] The Mercury transit will take place on 8 November from 11:12 a.m. - 4:10 p.m. PST (2:12 p.m. - 7:10 p.m. EST). Portions of event will be visible from the Pacific, the Americas, eastern Asia, Australia, and New Zealand.
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»» Watch Mercury Transit the Sun on November 8 Live From Kitt Peak National Observatory
[Monday, October 30, 2006] The National Science Foundation's Kitt Peak National Observatory and the Exploratorium are joining forces to present a live view of an unusual celestial event: the transit of planet Mercury across the face of the Sun, as seen from Earth.
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»» MESSENGER Completes Venus Flyby
[Tuesday, October 24, 2006] MESSENGER came within 2,990 kilometers of the surface of Venus early this morning during its second planetary encounter. The spacecraft used the planet's gravity to shrink the radius of its orbit around the Sun and bringing it closer to Mercury.
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»» Shadows and Silhouettes: Looking for Transits
[Friday, October 6, 2006] On November 8, Mercury will transit the Sun. From Earth, we'll see the silhouette of Mercury travel across the disk of the Sun. Transits are uncommon but predictable events.
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»» MESSENGER Mission News August 3, 2006
[Sunday, August 6, 2006] MESSENGER team members have been running tests all summer to make sure the spacecraft will operate as intended during the Venus flyby the first of two swings past the clouded planet scheduled for Oct. 24, 2006.
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»» MESSENGER Flips Sunshade Toward the Sun
[Thursday, June 22, 2006] The 16-minute maneuver, designed to keep MESSENGER operating at safe temperatures as it moves closer to the Sun, wrapped up at 9:34 a.m. EDT, with successful reacquisition of signal from MESSENGER's front-side antenna.
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»» Mercury's Formation Impact Splattered Earth with Material
[Thursday, April 6, 2006] New computer simulations of Mercury's formation show the fate of material blasted out into space when a large proto-planet collided with a giant asteroid 4.5 billion years ago.
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»» Status Report: NASA MESSENGER Passes the Billion-Mile Mark!
[Saturday, March 25, 2006] On March 23 MESSENGER reached the one-billion mile mark, placing the spacecraft about one-fifth of the way toward its destination to orbit Mercury.
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»» NASA MESSENGER Lines Up for Venus Flyby
[Friday, February 24, 2006] A short-duration maneuver placed the spacecraft on track for its next major mission event: the first Venus flyby on October 24, 2006.
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»» The SIXS instrument by Finnish astronomers goes to Mercury
[Friday, February 17, 2006] ESA is building a probe which will end up in orbit around Mercury for at least one year. The orbiter will carry with it cameras which can take accurate images of different wavelengths of the surface of this exotic and little-known planet
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»» MESSENGER Engine Burn Puts Spacecraft on Track for Venus
[Monday, December 12, 2005] NASA's Mercury-bound MESSENGER spacecraft successfully fired its large bipropellant thruster today for the first time since launch, completing the first of several critical deep space maneuvers that will help the spacecraft reach Mercury orbit.
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»» The proximity of Mercury's spin to Cassini state 1
[Wednesday, November 16, 2005] "In determining Mercury's core structure from its rotational properties, the value of the normalized moment of inertia from the location of Cassini 1 is crucial."
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»» MESSENGER Team Prepares for December Maneuver
[Friday, November 11, 2005] After successfully uploading new software to the MESSENGER spacecraft, mission controllers are setting their sights on the December Deep Space Maneuver (DSM-1), when the craft's large bipropellant thruster will be fired for the first time.
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»» MESSENGERMeets Venus!
[Friday, November 11, 2005] On Nov. 7, 2005, the MESSENGER spacecraft passed inside the orbit of Venus. While Venus was about 54 million miles from the spacecraft at this time, the spacecraft was 67.2 million miles (108.1 million kilometers) from the Sun.
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»» More top stories from October.
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