dec 012013
 
The First Stars

  The first stars in the Universe are believed to have formed only a few hundred million years after the Big Bang, about 13.7 billion years ago. They heated and ionized the pristine intergalactic medium, and their supernova explosions enriched the primordial gas with the first heavy elements (the Universe was born with only hydrogen [continue reading]

sep 252013
 
The Densest Galaxy In the Nearby Universe Found

  The densest galaxy in the nearby Universe may have been found. Packed with an extraordinary number of stars, this unusual galaxy is providing astronomers with clues to its intriguing past and how it fits into the galactic evolutionary chain. This composite image shows M60 and the region around it, where data from NASAís Chandra [continue reading]

aug 072013
 
A 12.7 Billion Years Old Galaxy Discovered

  More than 12 billion years ago a star exploded, ripping itself apart and blasting its remains outward in twin jets at nearly the speed of light. At its death it glowed so brightly that it outshone its entire galaxy by a million times. This brilliant flash traveled across space for 12.7 billion years to [continue reading]

jul 042013
 
New Knowledge about Early Galaxies

  The early galaxies of the Universe were very different from today’s galaxies. Using new detailed studies carried out with the ESO Very Large Telescope and the Hubble Space Telescope, researchers, including members from the Niels Bohr Institute, have studied an early galaxy in unprecedented detail and determined a number of important properties such as [continue reading]

apr 292013
 
Looking for Habited Planets Around White Dwarfs

    TAU finds white dwarf stars may hold the key to detecting life on other planets   Because it has no source of energy, a dead star — known as a white dwarf — will eventually cool down and fade away. But circumstantial evidence suggests that white dwarfs can still support habitable planets, says [continue reading]

jan 152013
 
Huge Supply of Pristine Gas around Modern Galaxies Found

  Galaxies have a voracious appetite for fuel — in this case, fresh gas — but astronomers have had difficulty finding the pristine gas that should be falling onto galaxies. Now, scientists have provided direct empirical evidence for these gas flows using new observations from the Hubble Space Telescope. The team led by Nicolas Lehner, [continue reading]