apr 052013
 
Farthest Type Ia Supernova So Far Discovered

  NASA’s Hubble Space Telescope has found the farthest supernova so far of the type used to measure cosmic distances. Supernova UDS10Wil, nicknamed SN Wilson after American President Woodrow Wilson, exploded more than 10 billion years ago. This is a Hubble Space Telescope view of supernova SN UDS10Wil, nicknamed SN Wilson that exploded over 10 [continue reading]

jan 062013
 
Anne's Picture of the Day: Kepler’s Supernova

January 6, 2012 Kepler’s Supernova, a supernova remnant in Ophiuchus Image Credit: NASA/CXC/NCSU/S. Reynolds et al. Kepler’s Supernova (SN 1604) is the remnant of a Type Ia supernova explosion that occurred in the Milky Way, some 16,000 – 23,000 light-years away in the constellation of Ophiuchus. This asymmetric bubble-shaped shroud of gas and dust, that [continue reading]

nov 202012
 
Most Peculiar Supernovae Explained by Failed Explosions

  Supercomputer simulations have revealed that a type of oddly dim, exploding star is probably a class of duds—one that could nonetheless throw new light on the mysterious nature of dark energy. A collaboration led by George Jordan at the University of Chicago’s Flash Center for Computational Science has conclusively demonstrated a connection between white [continue reading]

sep 282012
 
What Caused the Stellar Explosion in 1006?

  Between 30 April and 1 May of the year 1006 the brightest stellar event ever recorded in history occurred: a supernova, or stellar explosion, that was widely observed by various civilizations from different places on the Earth. More than a thousand years later a team led by researchers from the University of Barcelona, the [continue reading]

aug 242012
 
Type Ia Supernovae Have Different Origins

  Exploding stars called Type 1a supernovae are ideal for measuring cosmic distances because they are bright enough to spot across the Universe and have relatively the same luminosity everywhere. Although astronomers have many theories about the kinds of star systems involved in these explosions (or progenitor systems), no one has ever directly observed one—until [continue reading]

mei 082012
 
Supernovae Come From Two Different Systems

  The exploding stars known as Type Ia supernovae serve an important role in measuring the universe, and were used to discover the existence of dark energy. They’re bright enough to see across large distances, and similar enough to act as a “standard candle” – an object of known luminosity. The 2011 Nobel Prize in [continue reading]