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Follow Rosetta's Final Earth Boost Paris, France (ESA) Nov 05, 2009 
ESA's comet chaser Rosetta will swing by Earth for the last time on 13 November to pick up energy and begin the final leg of its 10-year journey to comet 67P/Churyumov-Gerasimenko. ESA's European Space Operations Centre will host a media briefing on that day. This will be the third Earth swingby, the last of Rosetta's four planetary gravity assists. Closest approach to Earth is expected at ... read more'Ultra-Primitive' Particles Found In Comet Dust 
Washington DC (SPX) Nov 03, 2009Dust samples collected by high-flying aircraft in the upper atmosphere have yielded an unexpectedly rich trove of relicts from the ancient cosmos, report scientists from the Carnegie Institution. The stratospheric dust includes minute grains that likely formed inside stars that lived and died long before the birth of our Sun, as well as material from molecular clouds in interstellar space. ... more
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Dawn Keeps Tarcking To Vesta
Pasadena CA (SPX) Nov 03, 2009Dawn continues to make steady progress on its journey through the solar system. The spacecraft has devoted another month to thrusting with its ion propulsion system, ever with its sights set on its rendezvous with Vesta in July 2011. While it will have other assignments along the way, propelling itself to the giant protoplanet deep in the main asteroid belt remains its principal ... more Rosetta's Third Earth Swingby 
Paris, France (ESA) Nov 02, 2009On 13 November 2009 Rosetta will swing by Earth and pass within 2500 km of Earth's surface. The manoeuvre is the fourth and last in a series of gravity assists and will provide the spacecraft with the required orbital boost to set course for the mission's final destination: comet 67P/Churyumov-Gerasimenko. Since its launch on 2 March 2004 Rosetta has made a long journey through the inner ... more Rosetta Lined Up Nicely For Earth Approach
Paris, France (ESA) Oct 29, 2009Following the first and primary trajectory correction manoeuvre 22 October, Rosetta is lined up nicely for the approach to Earth. The manoeuvre provided an 8.8 cm/s change in orbital velocity and the thruster performance was accurate. Closest approach to Earth is now scheduled for 08:45 CET on 13 November. The results of last Thursday's trajectory correction manoeuvre (TCM) have been ... more Last Visit Home For ESA's Comet Chaser 
Paris, France (ESA) Oct 21, 2009ESA's Rosetta comet chaser will swing by Earth on 13 November to pick up orbital energy and begin the final leg of its 10-year journey to the outer Solar System. Several observations of the Earth-Moon system are planned before the spacecraft heads out to study comet 67/P Churyumov-Gerasimenko. This will be the third Earth swingby, the last of Rosetta's four planetary gravity assists. ... more |
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In Search Of Dark Asteroids (And Other Sneaky Things)
Huntsville AL (SPX) Sep 16, 2009Ninjas knew how to be stealthy: Be dark. Emit very little light. Move in the shadows between bright places. In modern warfare, though, ninjas would be sitting ducks. Their black clothes may be hard to see at night with the naked eye, but their warm bodies would be clearly visible to a soldier wearing infrared goggles. To hunt for the "ninjas" of the cosmos - dim objects that lurk in the ... more Catastrophic Darkness 
Moffett Field CA (SPX) Sep 11, 2009A dinosaur-killing asteroid may have wiped out much of life on Earth 65 million years ago, but now scientists have discovered how smaller organisms might have survived in the darkness following such a catastrophic impact. Survival may have depended upon jack-of-all-trades organisms called mixotrophs that can consume organic matter in the absence of sunlight. That would have proved crucial ... more 2009 Comet Awards Announced 
Cambridge MA (SPX) Aug 28, 2009Finding a comet can be a quick way to get some immortal fame - and a little spending money, as well. An annual award of several thousand dollars for discoveries of comets by amateur astronomers has just been announced for five individuals in five different countries. The Central Bureau for Astronomical Telegrams (CBAT) - operated by the Smithsonian Astrophysical Observatory (SAO) in Cambri ... more Jumping Asteroids 
Pasadena CA (JPL) Aug 20, 2009How our solar system was formed has fascinated scientists and laymen alike for - well, for a really, really long time. New research may have answered a piece to the puzzle - how big were the first planetesimals? For those of you scoring at home," planetesimals" were the first solid objects in our newly minted solar system (also known as the protoplanetary disk). They began life as small ... more |
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