jun 012013
 
Low-Sodium ‘Diet’ Key to Stellar Old Age

  Astrophysicists have found that contrary to decades of orthodoxy, stars with a high sodium content die before reaching the final, spectacular stages of life. NGC 6752, a globular cluster of stars in our Milky Way galaxy, 13,000 light years from Earth in the constellation of Pavo. Image Credit: ESA/Hubble & NASA In a study published [continue reading]

aug 042012
 
Supernova Progenitor Found?

  Type Ia supernovae are violent stellar explosions. Observations of their brightness are used to determine distances in the universe and have shown scientists that the cosmos is expanding at an accelerating rate. But there is still too little known about the specifics of the processes by which these supernovae form. New research, led by [continue reading]

jun 032012
 
Astronomers Confirm 'Evaporating' Planet Around Nearby Star

  Astronomers from The University of Texas at Austin and Wesleyan University have used the Hobby-Eberly Telescope at UT Austin’s McDonald Observatory to confirm that a Jupiter-size planet in a nearby solar system is dissolving, albeit excruciatingly slowly, because of interactions with its parent star. Their findings could help astronomers better understand star-planet interactions in [continue reading]