Browsing All Posts published on »October 19th, 2011«

It’s Raining Comets

October 19, 2011

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NASA’s Spitzer Detects Comet Storm In Nearby Solar System This artist’s conception illustrates a storm of comets around a star near our own, called Eta Corvi. Evidence for this barrage comes from NASA’s Spitzer Space Telescope, whose infrared detectors picked up indications that one or more comets was recently torn to shreds after colliding with […]

What Are the Odds You’ll Get Struck by the Falling ROSAT Satellite?

October 19, 2011

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This exclusive image was made by Ralf Vandebergh, who said: “”It is false-color to increase certain visible contrasts. A very special detail visible is the shadow of the body (the telescope) on the solar panels! You can see the angle with the sun and the observer (me) as ROSAT passed not overhead but [at] 51.4 […]

Spiral Arms Point to Possible Planets in a Star’s Dusty Disk

October 19, 2011

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Simulations of young stellar systems suggest that planets embedded in a circumstellar disk can produce many distinctive structures, including rings, gaps and spiral arms. This video compares computer simulations of hypothetical systems to the Subaru image of SAO 206462. A new image of the disk of gas and dust around a sun-like star is the […]

Neutrino watch

October 19, 2011

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… Speed claim baffles CERN theoryfest Even a meeting of elite minds at Europe’s top particle physics lab couldn’t do it: reconciling neutrinos that appear to break the cosmic speed limit with the laws of physics is still beyond us. However, a paper on the speeding neutrinos has been accepted for publication and the first […]

Tiny battery is also a nanomotor

October 19, 2011

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Measuring just 3.6 micrometers long, one of the smallest batteries ever made won’t be powering our electronic devices anytime soon, but it does serve as a self-powered nanomotor that is surprisingly fast and efficient. Ultimately, the nanobattery-based motor could be used as a nanomachine and to transport cargo for biomedical applications. The researchers, Dr. Ran […]

Not Such a Stretch to Reach for the Stars

October 19, 2011

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A starship without an engine? It may seem a fantastical notion, but hardly more so than the idea of building a starship of any kind, especially with NASA’s future uncertain at best. Yet here in Orlando, not far from the launching site of the space program’s most triumphant achievements, the government’s Defense Advanced Research Projects […]