mrt 142013
 
Highly Active Galaxies in the Very Early Universe Found

  Record-breaking haul of distant galaxies includes most distant detection of water published to date   Observations with the Atacama Large Millimeter/submillimeter Array (ALMA) show that the most vigorous bursts of star formation in the cosmos took place much earlier than previously thought. The results are published in a set of papers to appear in the [continue reading]

jan 262013
 
Anne's Picture of the Day: Galaxy Cluster Abell 2218

January 26, 2013 Abell 2218, a galaxy cluster in Draco Image Credit: NASA, ESA, and Johan Richard (Caltech, USA) Acknowledgement: Davide de Martin & James Long (ESA/Hubble) Abell 2218 is a rich galaxy cluster that contains more than 10,000 galaxies, located some 2.35 billion light-years away (redshift 0.18) in the northern constellation of Draco. Redshift [continue reading]

dec 012012
 
‘Dark Core’ in Galaxy Cluster May Not Be So Dark After All

  Astronomers were puzzled earlier this year when NASA’s Hubble Space Telescope spotted an overabundance of dark matter in the heart of the merging galaxy cluster Abell 520. This observation was surprising because dark matter and galaxies should be anchored together, even during a collision between galaxy clusters. These composite images taken by two different [continue reading]

nov 162012
 
Most Distant Galaxy Yet Known Discovered

  By combining the power of NASA’s Hubble Space Telescope, Spitzer Space Telescope, and one of nature’s own natural “zoom lenses” in space, astronomers have set a new distance record for finding the farthest galaxy yet seen in the Universe. In this image, astronomers use NASA’s Hubble Space Telescope and a cosmic zoom lens to [continue reading]

sep 202012
 
Most Distant Galaxy from the Very Early Universe Spotted

  Discovery of small, faint galaxy opens window into deepest, most remote epochs of cosmic history   With the combined power of NASA’s Spitzer and Hubble space telescopes as well as a cosmic magnification effect, a team of astronomers led by Wei Zheng of The Johns Hopkins University has spotted what could be the most distant galaxy [continue reading]

jul 052012
 
A Bridge of Dark Matter Detected

  Direct measurement of a dark-matter ‘filament’ confirms its existence in a galaxy supercluster.   A ‘finger’ of the Universe’s dark-matter skeleton, which ultimately dictates where galaxies form, has been observed for the first time. Researchers have directly detected a slim bridge of dark matter joining two clusters of galaxies, using a technique that could [continue reading]