spacetoday.net: space news from around the webin association with SpaceNews


Astronomers find oldest galaxies in Hubble images
Posted: Thu, Dec 13, 2012, 7:17 AM ET (1217 GMT)
Ultra Deep Field 2012 image (STScI) Astronomers have found a population of galaxies more than 13 billion years old in a new "deep field" image set from the Hubble Space Telescope. The galaxies, found in Hubble's Ultra Deep Field 2012 (UDF12) near-infrared images, date back to between 350 and 600 million years after the Big Bang. Astronomers report that the images show the population of galaxies gradually decreases going back in time to about 450 millions years after the Big Bang, supporting models where "reionization," a reheating of cold hydrogen gas in the universe, took place gradually over the course of several hundred million years as the first galaxies formed. Astronomers used Hubble to take the UDF12 images with the telescope's Wide Field Camera 3 during August and September.
<<previous article   next article>>
news in brief
Union accepts contract to end ULA strike
Posted: Sun, May 20 1:41 PM ET (1741 GMT)

Contamination found in SLS core stage tubing
Posted: Sun, May 20 1:40 PM ET (1740 GMT)

Appropriators pass NASA spending bill that funds WFIRST
Posted: Sun, May 20 1:39 PM ET (1739 GMT)

news links
Tuesday, May 22
ULA machinists vote to end strike against Alabama rocket plant
Huntsville Times — 7:13 am ET (1113 GMT)
David PavlĂ­k From SpaceX to Join Kiwi.com as CIO
PR Newswire — 7:12 am ET (1112 GMT)


about spacetoday.net   ·   info@spacetoday.net   ·   mailing list