The Unseen Universe –“Billions of Undetected Galaxies” (Today’s Most Popular)



The European Space Agency’s Herschel space telescope discovered that previously unseen distant galaxies are responsible for a cosmic fog of infrared radiation. The galaxies are some of the faintest and furthest objects seen by Herschel, and opened a new window on the birth of stars in the early Universe. 


Image of the Day: A Brilliant Milky Way Star Cluster –One of the Most Ancient Objects in the Universe



Spectacular globular star cluster NGC 6362 was captured by the Wide Field Imager attached to the MPG/ESO 2.2-metre telescope at ESO's La Silla Observatory in Chile. This new image, along with a new image of the central region from the NASA/ESA Hubble Space Telescope, provide the best view of this little-known cluster ever obtained.
Globular clusters are among the oldest objects in the Universe. The many yellowish stars in the cluster have already run through much of their lives and become red giant stars. But globular clusters are not static relics from the past — some curious stellar activities are still going on in these dense star cities.


First Planet Discovered in a Quadruple Star System


Contact Quadruple Star System


High-contrast imaging observations have confirmed the first extrasolar planet discovered in a quadruple star system. The images (bottom of page) revealed that the system involved two sets of binary stars, according to Justin Crepp, Freimann Assistant Professor of physics at the University of Notre Dame.


Previously Unknown Population Explosion of Human Species 40,000 Years Ago –Discovered




DNA sequencing of 36 complete Y chromosomes has uncovered a previously unknown population explosion that occurred 40 to 50 thousand years ago, between the first expansion of modern humans out of Africa 60 to 70 thousand years ago and the Neolithic expansions of people in several parts of the world starting 10 thousand years ago. This is the first time researchers have used the information from large-scale DNA sequencing to create an accurate family tree of the Y chromosome, from which the inferences about human population history could be made.


EcoAlert: Titan Supercomputer –Launches New Era for Climate-Change Analysis at 20,000 Trillion Calculations per Second



The U.S. Department of Energy’s (DOE) Oak Ridge National Laboratory (ORNL) has launched a new era of scientific supercomputing today with Titan, a system capable of more than 20,000 trillion calculations each second — or 20 petaflops — peak performance by employing a family of processors called graphic processing units (GPUs) first created for computer gaming. Titan will provide unprecedented computing power for research in energy, climate change, materials and other disciplines to enable scientific leadership.



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