mei 032013
 
VLA Finds Background Radio Emission is Submitted by Galaxies

  Staring at a small patch of sky for more than 50 hours with the ultra-sensitive  Karl G. Jansky Very Large Array (VLA), astronomers have for the first time identified discrete sources that account for nearly all the radio waves coming from distant galaxies. They found that about 63 percent of the background radio emission [continue reading]

feb 122013
 
Predicting the Future Path of Close Passing Asteroid 2012 DA1

  The record-setting close approach of an asteroid on Feb. 15 is an exciting opportunity for scientists, and a research team will use National Radio Astronomy Observatory (NRAO) and NASA telescopes to gain a key clue that will help them predict the future path of this nearby cosmic neighbor. This NASA diagram depicting the passage [continue reading]

jan 232013
 
Telescope Takes Temperature of the Universe

  Astronomers using a CSIRO radio telescope have taken the Universe’s temperature, and have found that it has cooled down just the way the Big Bang theory predicts. SIRO’s Australia Telescope Compact Array. Photo: David Smyth Using the CSIRO Australia Telescope Compact Array near Narrabri, NSW, an international team from Sweden, France, Germany and Australia [continue reading]

jan 212013
 
Auroras Also Occur Outside our Solar System

  University of Leicester planetary scientists have found new evidence suggesting auroras – similar to Earth’s Aurora Borealis – occur on bodies outside our Solar System. Auroras Bigger Than the Entire Earth: This image shows X-ray auroras observed by the Chandra X-ray Observatory overlaid on a simultaneous optical image from the Hubble Space Telescope of [continue reading]

dec 272012
 
More Active Black Holes Than Thought

  Very sensitive, wide-field observations with a worldwide network of radio telescopes have uncovered supermassive black holes residing in the center of dust obscured galaxies. In some cases, the amount of dust is so large that even x-rays from the accreting black holes are absorbed in these systems. This is the result of research done by astronomers [continue reading]

jul 172012
 
A 'Low-Field Magnetar' Discovered

  Is it a magnetar or is it a pulsar? A second member of a rare breed of dead, spinning star has been identified thanks to an armada of space-based X-ray telescopes, including ESA’s XMM-Newton.  A magnetar or a pulsar? Credit: ESA–C. Carreau Magnetars are a type of neutron star, the dead cores of massive stars [continue reading]