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Messenger Aims for May Launch Date
Laurel - Oct 22, 2003 The first mission designed to orbit the planet Mercury is working toward a launch in May 2004. Messenger was originally scheduled to lift off next March. In late August, however, mission managers recommended to NASA that Messenger aim for its backup launch date, after late deliveries of key subsystems and greater-than-expected technical difficulties had affected the spacecraft's assembly and testing schedule. NASA recently concurred with the recommendation. "A May launch date allows us to put Messenger through a full series of rigorous prelaunch tests and simulations," says Dr. Sean C. Solomon, Messenger's Principal Investigator, from the Carnegie Institution of Washington. "The mission's science plans for Mercury remain unchanged, and our team looks forward to exploring as planned the least understood planet in the inner solar system." Messenger's mission profile includes a 12-day launch window that opens May 11, 2004; three flybys of Venus and two flybys of Mercury; and a yearlong orbital study of Mercury that starts in July 2009 - three months later than the original arrival date. Details of Messenger's mission design are available on the Messenger Web site. A backup launch opportunity also exists in late July-early August 2004. Spacecraft assembly is nearing completion at The Johns Hopkins University Applied Physics Laboratory in Laurel, Md., with the expectation that prelaunch space-environment testing will begin at NASA's Goddard Space Flight Center in Greenbelt. Md., by late December. Final preparations for launch are set to begin at Kennedy Space Center/Cape Canaveral Air Force Station, Fla., in early March 2004. Related Links Messenger Mission Site SpaceDaily Search SpaceDaily Subscribe To SpaceDaily Express
Hubble Watches Light From Mysterious Star Reverberate
Baltimore - Mar 28, 2003In January 2002, a dull star in an obscure constellation suddenly became 600,000 times more luminous than our Sun, temporarily making it the brightest star in our Milky Way galaxy. |
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