mei 192013
 
Distant Starburst Galaxy Challenges Galaxy Evolution Theory

  ESA’s Herschel space observatory has discovered an extremely distant galaxy making stars more than 2000 times faster than our own Milky Way. Seen at a time when the Universe was less than a billion years old, its mere existence challenges our theories of galaxy evolution. Artist’s impression of starburst galaxy HFLS3. The galaxy appears [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]

sep 192012
 
Quasars are Mileposts for Marking the Universe’s Expansion

  Scientists can’t travel deep space the way Columbus sailed and charted the New World or Lewis and Clark mapped the west. But, researchers at Case Western Reserve University and two partnering institutions have found a possible way to map the spread and structure of the Universe, guided by the light of quasars. This is [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]

mei 052012
 
Quasars shine a new light on cosmic distances

  An international team of scientists has developed a method to determine the distances to quasars throughout the universe. This could allow quasars to be used as standard candles. The researchers found characteristic patterns in the light given off by a group of quasars and say that these regularities are directly related to the redshift [continue reading]

apr 112012
 
'Cosmic mirages' confirm accelerated cosmic expansion

An international team of researchers led by Masamune Oguri at Kavli IPMU and Naohisa Inada at Nara National College of Technology conduced an unprecedented survey of gravitationally lensed quasars, and used it to measure the expansion history of the universe. The result provides strong evidence that the expansion of the universe is accelerating. There were [continue reading]