[image title=”supernova” size=”thumbnail” id=”141″ align=”right” linkto=”https://irrationale2.files.wordpress.com/2008/07/supernova.jpg” ]Back in the day, the universe could really belt out the supernovae — but no more. A new survey of monster stellar detonations shows that the more distant and ancient the explosions are, the greater their inherent brightness. This discovery has important implications for measuring the rate at which the universe is expanding, and therefore that weird space-making cosmological mystery called dark energy.
The ongoing Supernovae Legacy Survey, which led to the discovery, involves comparing the supernovae of nearby galaxies to those which can be spotted igniting up to nine billion light-years away.
[image title=”binary” size=”thumbnail” id=”315″ align=”right” linkto=”https://irrationale2.files.wordpress.com/2008/08/binary.png” ]Einstein’s predicted warping of space-time has been discovered around neutron stars, the most dense observable matter in the universe.
The warping shows up as smeared lines of iron gas whipping around the stars, University of Michigan and NASA astronomers say. The finding also indicates a size limit for the celestial objects.
The same distortions have been spotted around black holes and even around Earth, so while the finding may not be a surprise, it is significant for answering basic questions of physics, said study team member Sudip Bhattacharyya of NASA’s Goddard Space Flight Center in Greenbelt, Md. and the University of Maryland, College Park.
Full story at Space.com