24/7 News Coverage
November 20, 2009
Dawn Enters Asteroid Belt -- For Good
Pasadena CA (SPX) Nov 16, 2009
NASA's Dawn spacecraft re-entered our solar system's asteroid belt on Nov. 13, and this time it will stay there. Dawn first entered the belt (whose lower boundary may be defined as the greatest distance Mars gets from the sun (249,230,000 kilometers, or 154,864,000 miles) in June 2008. It remained within the belt for 40 days before its carefully planned orbital path brought it below the ... read more

Rosetta Bound For Outer Solar System After Final Earth Swingby
Paris, France (ESA) Nov 16, 2009
Mission controllers have confirmed that ESA's comet chaser Rosetta swung by Earth as planned, skimming past our planet to pick up a gravitational boost for an epic journey to rendezvous with comet 67P/Churyumov-Gerasimenko in 2014. Rosetta passed over the ocean, just South of the Indonesian island of Java, at exactly 08:45:40 CET, at a speed of 13.34 km/s with respect to Earth at an ... more

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Rosetta's Observations During The Third Earth Swingby
Paris, France (ESA) Nov 12, 2009
Rosetta's third Earth swingby on 13 November 2009 provides an important opportunity to obtain calibration measurements for the science instruments and to perform science observations of both the Earth and the Moon from a unique vantage point. Rosetta is currently on its inbound trajectory towards Earth for the mission's final gravity assist manoeuvre. On 13 November, at about 7:46 UT, the ... more

Asteroid Explorer "HAYABUSA" Ion Engine Anomaly
Tokyo, Japan (SPX) Nov 12, 2009
On November 4th (Wed., Japan Standard Time), the Japan Aerospace Exploration Agency identified that one of the main ion engines (Thruster D) aboard the Asteroid Explorer "HAYABUSA" had autonomously stopped detecting a high neutralizer voltage owing to degradation. The HAYABUSA was in the second propulsion period during its return cruise back to the Earth in June 2010. Since the anomaly was ... more

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 ... more

'Ultra-Primitive' Particles Found In Comet Dust
Washington DC (SPX) Nov 03, 2009
Dust 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


  • Rosetta's Third Earth Swingby


  • Rosetta Lined Up Nicely For Earth Approach


  • Last Visit Home For ESA's Comet Chaser
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    NASA Refines Asteroid Apophis' Path Toward Earth
    Pasadena CA (SPX) Oct 08, 2009
    Using updated information, NASA scientists have recalculated the path of a large asteroid. The refined path indicates a significantly reduced likelihood of a hazardous encounter with Earth in 2036. The Apophis asteroid is approximately the size of two-and-a-half football fields. The new data were documented by near-Earth object scientists Steve Chesley and Paul Chodas at NASA's Jet ... more

    Asteroid Juno Grabs Spotlight
    Pasadena CA (SPX) Sep 18, 2009
    Toward the end of September, the sun will turn a spotlight on the asteroid Juno, giving that bulky lump of rock a rare featured cameo in the night sky. Those who get out to a dark, unpolluted sky will be able to spot the asteroid's silvery glint near the planet Uranus with a pair of binoculars. "It can usually be seen by a good amateur telescope, but the guy on the street doesn't usually ... more

    Mini-Comets Within A Comet Lit Up 17P/Holmes During Mega-Outburst
    Los Angeles CA (SPX) Sep 17, 2009
    Astronomers from the University of California, Los Angeles and the University of Hawaii have discovered multiple fragments ejected during the largest cometary outburst ever witnessed. Images and animations showing fragments rapidly flying away from the nucleus of comet 17P/Holmes will be presented by Rachel Stevenson at the European Planetary Science Congress in Potsdam, Germany, on Wednesday 16 ... more

    Jupiter Captured Comet For 12 Years In Mid-20th Century
    Potsdam, Germany (SPX) Sep 15, 2009
    Comet 147P/Kushida-Muramatsu was captured as a temporary moon of Jupiter in the mid-20th century and remained trapped in an irregular orbit for about twelve years. There are only a handful of known comets where this phenomenon of temporary satellite capture has occurred and the capture duration in the case of Kushida-Muramatsu, which orbited Jupiter between 1949 and 1961, is the third long ... more

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  • In Search Of Dark Asteroids (And Other Sneaky Things)


  • Catastrophic Darkness


  • 2009 Comet Awards Announced


  • Jumping Asteroids
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