(Phys.org)—NASA's Deep Impact spacecraft completed a firing of its onboard rocket motors earlier today. The maneuver began at 1 p.m. PDT (4 p.m. EDT), lasted 71 seconds, and changed its velocity by 4.5 mph (2 meters per ...
Space Exploration
Oct 5, 2012
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(PhysOrg.com) -- The EPOXI mission spacecraft has refined its path toward a Nov. 4 flyby of comet Hartley 2, successfully performing its final maneuver today at 8 a.m. PDT (11 a.m. EDT). The spacecraft burned its engines ...
Space Exploration
Nov 2, 2010
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As Stardust-Next was racing past Comet Tempel at 9.8 km/sec, or 24,000 MPH, it encountered a hail of bullet like particles akin to a warplane meeting the fury of armed resistance fighters which potentially could have utterly ...
Space Exploration
Feb 24, 2011
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Two movies derived from images taken by the two cameras aboard NASA's EPOXI mission spacecraft show comet Hartley 2 is, as expected, quite active, and it provides information on the nucleus's rotation. The spacecraft has ...
Space Exploration
Nov 2, 2010
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(PhysOrg.com) -- The comet Hartley 2 is a relatively small and elongated comet - only about 0.6 x 0.4 kilometers in size. It orbits the sun every 6.46 years, getting as close to it as 1.05 astronomical units (the Earth is ...
Astronomy
Jun 15, 2011
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(PhysOrg.com) -- Eighty-six days out from its appointment with a comet, NASA's Stardust spacecraft fired its thrusters to help refine its flight path. The Stardust-NExT mission will fly past comet Tempel 1 next Valentine's ...
Space Exploration
Nov 23, 2010
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Five years after a NASA spacecraft bombarded a comet, it will visit another one Thursday. This time, there won't be celestial fireworks.
Space Exploration
Nov 4, 2010
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Comets contained vast oceans of liquid water in their interiors during the first million years of their formation, a new study claims.
Space Exploration
Jul 30, 2009
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In most cases, a Valentine's Day rendezvous that resembles a flight through artillery fire is less than ideal.
Space Exploration
Feb 21, 2011
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A NASA spacecraft is ready to get up close and personal with its comet sweetheart.
Space Exploration
Feb 14, 2011
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