free-thinkers.eu Freak space rock spins dusty trail
Guest@54.196.190.32 | PATH: /reblog/space/freak-space-rock-spi...
274

Freak space rock spins dusty trail

Source: http://www.bbc.co.uk/news/science-environment-2485...

Asteroid P/2013 P5 has been ejecting dust periodically for at least five months and may be in the process of breaking up. They have outlined details in the journal Astrophysical Journal Letters. "We were literally dumbfounded when we saw it," said Prof Dave Jewitt, from the University of California at Los Angeles. "Even more amazing, its tail structures change dramatically in just 13 days as it belches out dust. That also caught us by surprise. It's hard to believe we're looking at an asteroid." Astronomers say it is possible the asteroid's rotation rate increased to the point where its surface started flying apart. Radiation pressure from the Sun could have sent the space rock spinning, to a point where the asteroid's weak gravity could no longer hold it together. Astronomers will continue observing P/2013 P5 to see whether the dust leaves the asteroid in the equatorial plane. Because of the physics involved in the spin rate theory, say the astronomers, this would provide strong evidence for a rotational breakup. They do not believe the tails are the result of an impact with another asteroid because they have not seen a large quantity of dust blasted into space all at once. Astronomers discovered the object in August, using the Pan-STARRS telescope in Hawaii. At the time, P/2013 P5 looked unusually fuzzy. The multiple tails were discovered when Hubble was used to take a more detailed image on 10 September.
http://free-thinkers.eu/post/206

Other recent posts in /reblog/space...

473

What's REALLY under the moondust

By Mark Prigg 16th May 2014 Scientists were able to peer 33 to 50 feet beneath the Sea of Serenity Close to the site where NASA's final manned lunar effort, the Apollo 17 mission, landed. Revealed details in two lunar locales, the Sea of Serenity and a crater called Aristillus
434

Fresh impact crater spied on Mars

6th February 2014 A Nasa spacecraft in orbit around the Red Planet has spied a fresh impact crater on the Martian surface.

Warning your connection is not encrypted

Please consider using SSL (https://) encryption while browsing free-thinkers.eu. Note we do not pay for our SSL certificate, it is self signed. If you get a warning you can safely ignore it. If using Firefox, consider permanently allowing our certificate in your browser. Click the link to use an SSL connection to this page: https://free-thinkers.eu/reblog/space/freak-space-rock-spins-dusty-trail