26
May 11

Nearby supernovas may aid in understanding of star lifecycles

Source: Penn State Live


Credit: ASA/CXC/PSU/L.Townsley et al.

According to a wealth of new data from NASA's X-ray Observatory, what scientists are calling a "supernova factory" has come to life in the Carina Nebula, located a mere 7,500 light years from Earth. This discovery may help astronomers to better understand how some of the Milky Way Galaxy's heaviest and youngest stars race through their lives and release newly-forged elements into their surroundings. (read more)

Related News
Carina Nebula: Nearby supernova factory ramps up

Twitter del.icio.us Digg Facebook linked-in Yahoo Buzz StumbleUpon
26
May 11

Carina Nebula: Nearby supernova factory ramps up

Source: NASA/Chandra


Image credit: NASA/CXC/PSU/L.Townsley et al.

A new Chandra image shows the Carina Nebula, a star-forming region in the Sagittarius-Carina arm of the Milky Way a mere 7,500 light years from Earth. Chandra's sharp X-ray vision has detected over 14,000 stars in this region, revealed a diffuse X-ray glow, and provided strong evidence that massive stars have already self-destructed in this nearby supernova factory.(read more)

Twitter del.icio.us Digg Facebook linked-in Yahoo Buzz StumbleUpon
26
May 11

VLT finds a brilliant but solitary Superstar

Source: ESO Science Release eso1117


Star-forming region around the Tarantula Nebula in the Large Magellanic Cloud.
Image credit: ESO/M.-R. Cioni/VISTA Magellanic Cloud survey.
ESO's Acknowledgment: Cambridge Astronomical Survey Unit

An extraordinarily bright isolated star has been found in a nearby galaxy — the star is three million times brighter than the Sun. All previous similar “superstars” were found in star clusters, but this brilliant beacon shines in solitary splendour. The origin of this star is mysterious: did it form in isolation or was it ejected from a cluster? Either option challenges astronomers’ understanding of star formation.(read more)

Twitter del.icio.us Digg Facebook linked-in Yahoo Buzz StumbleUpon
26
May 11

NASA concludes attempts to contact Mars Rover Spirit

Source: NASA-Mars Exporation Rovers


Artist's concept of a NASA Mars Exploration Rover.
Image credit: NASA/JPL/Cornell University

NASA is ending attempts to regain contact with the long-lived Mars Exploration Rover Spirit, which last communicated on March 22, 2010.

A transmission that ended on Wednesday, May 25, was the last in a series of attempts. Extensive communications  activities during the past 10 months also have explored the possibility that Spirit might reawaken as the solar energy available increased after a stressful Martian winter without much sunlight. With inadequate energy to run its survival heaters, the rover likely experienced colder internal temperatures last year than in any of its prior six years on Mars. Many critical components and connections would have been susceptible to damage from the cold. (read more)

Twitter del.icio.us Digg Facebook linked-in Yahoo Buzz StumbleUpon