Sunday, November 27, 2005

Scientists See Light That May be from First Objects in Universe

SpaceRef - Your Space Reference

"This new Spitzer discovery agrees with observations from the NASA Cosmic Background Explorer satellite from the 1990s that suggested there may be an infrared background that could not be attributed to known stars. It also supports observations from the NASA Wilkinson Microwave Anisotropy Probe from 2003, which estimated that stars first ignited 200 million to 400 million years after the Big Bang.
'This difficult measurement pushes the instrument to performance limits that were not anticipated in its design,' said team member Dr. S. Harvey Moseley, instrument scientist for Spitzer. 'We have worked very hard to rule out other sources for the signal we observed.' "