aug 192013
 
Dwarf Galaxy Caught Ramming Into a Large Spiral

  Observations with NASA’s Chandra X-ray Observatory have revealed a massive cloud of multimillion-degree gas in a galaxy about 60 million light-years from Earth. The hot gas cloud is likely caused by a collision between a dwarf galaxy and a much larger galaxy called NGC 1232. If confirmed, this discovery would mark the first time [continue reading]

mei 262013
 
Galaxies Grow by Funnels of Cold Gas

  Computer simulations of galaxies growing over billions of years have revealed a likely scenario for how they feed: a cosmic version of swirly straws.  Created with the help of supercomputers, this still from a simulation shows the formation of a massive galaxy during the first 2 billion years of the Universe. Hydrogen gas is [continue reading]

mrt 152012
 
The Feeding Habits of Teenage Galaxies

Click to Enlarge New observations made with ESO’s Very Large Telescope are making a major contribution to understanding the growth of adolescent galaxies. In the biggest survey of its kind astronomers have found that galaxies changed their eating habits during their teenage years – the period from about 3 to 5 billion years after the [continue reading]