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![]() Paris, France (ESA) Jan 13, 2010 Close-up images of asteroid (2867) Steins, obtained with the OSIRIS cameras on Rosetta, have provided extensive new measurements of the physical properties of this main-belt asteroid. Steins is revealed to be a loosely-bound 'rubble pile' whose diamond shape has been honed by the YORP effect. This is the first time this effect has been seen in a main-belt asteroid. The results are reported by H. Uwe Keller and colleagues in the 8 January issue of Science magazine. ... read more |
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Cassini Data Show Enceladus In Motion![]() Blobs of warm ice that periodically rise to the surface and churn the icy crust on Saturn's moon Enceladus explain the quirky heat behavior and intriguing surface of the moon's south polar region, according to a new paper using data from NASA's Cassini spacecraft. "Cassini appears to have caught Enceladus in the middle of a burp," said Francis Nimmo, a planetary scientist at the University ... more Huygens Conference Marks Fifth Anniversary Of Titan Landing ![]() On 14 January 2005 the European Space Agency's Huygens probe separated from the Cassini spacecraft and landed on Saturn's moon Titan. The touchdown on the surface of Titan marked the first, and so far only, landing of a man-made probe in the outer Solar System. To mark the fifth anniversary of this remarkable event, scientists will gather from 13-15 January at the CosmoCaixa science museum in Barcelona, Spain, to review the key scientific and engineering achievements of Huygens, to evaluate the current understanding of Titan, and to consider future Titan exploration missions. ... more IYA2009 - Largest Science Education Event In History ![]() As the International Year of Astronomy 2009 (IYA2009) comes to a close, the true scope of the venture is becoming clear. The final count of countries involved stands at 148, a staggering number that confirms that the IYA2009 network is the largest ever in science. Activities and events from these participating nations paint a picture of professional and amateur astronomers bringing the Uni ... more |
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![]() Planning Our Phases On The Moon ![]() SMU Hosts NOvA Scientists ![]() Instant online solar energy quotes Solar Energy Solutions from ABC Solar |
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How To Stir Galaxy Disks![]() Two CNRS researchers at the Strasbourg Observatory have shown that in spiral galaxies containing a central bar - an elongated structure composed of stars - a vigorous mixing of stars in the disk takes place. They presented their work this week at the meeting of the American Astronomical Society. Until now, astronomers have attributed this mixing process, named "radial migration," solely ... more Did Metabolism Come First In Evolution ![]() A research published in Proceedings of National Academy of Sciences rejects the theory that the origin of life stems from a system of self-catalytic molecules capable of experiencing Darwinian evolution without the need of RNA or DNA and their replication. The research, which was carried out with the participation of Mauro Santos, researcher of the Department of Genetics and Microbiology ... more Why Won't the Supernova Explode ![]() A massive old star is about to die a spectacular death. As its nuclear fuel runs out, it begins to collapse under its own tremendous weight. The crushing pressure inside the star skyrockets, triggering new nuclear reactions, setting the stage for a terrifying blast. And then... nothing happens. At least that's what supercomputers have been telling astrophysicists for decades. Many of the b ... more |
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![]() Astronomy Question Of The Week: How Old Is The Universe ![]() Rohrabacher Suggests Partnership With Russia On Asteroid Interception Project ![]() Astronomers Simulate How White-Dwarf Stars Merge And Go Supernova |
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