apr 282013
 
Mysterious hot spots observed in Betelgeuse

  Astronomers have released a new image of the outer atmosphere of Betelgeuse – one of the nearest red supergiants to Earth – revealing the detailed structure of the matter being thrown off the star. The e-MERLIN image of Betelgeuse. Image Credit: University of Manchester The new image, taken by the e-MERLIN radio telescope array operated [continue reading]

jul 042012
 
Oh, Baby! A Rapidly Spinning Protostar Shows Off Her X-ray Spots

  X-ray observations have revealed something curious about the young star that illuminates McNeil’s Nebula, a glowing jewel of cosmic dust in the Orion constellation: The object is a protostar rotating once a day, or 30 times faster than the sun. The stellar baby also has distinct birthmarks—two X-ray-emitting spots, where gas flows from a [continue reading]