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Scientists Find Signs Of Early Neutrinos
Two European astrophysicists say ancient neutrinos can help track the early history of the universe, less than 300,000 years after the Big Bang. Roberto Trotta of Britain's Oxford University and Alessandro Melchiorri of the University of Rome looked at the cosmic microwave background, which they say shows the signature of neutrinos created soon after the Big Bang. The cosmic microwave background dates from about 300,000 years into the universe's life, the point when light could move in a straight line for the first time without being blocked. The background contains ripples, because matter was unevenly distributed as the universe began expanding. But Trotta and Melchiorri say that a detailed examination of the microwave background found that it contains less variation than expected, a sign that neutrinos were smoothing out the lumpiness. The theory is to be published in a forthcoming edition of Physical Review Letters 2. All rights reserved. © 2005 United Press International. Sections of the information displayed on this page (dispatches, photographs, logos) are protected by intellectual property rights owned by United Press International. As a consequence, you may not copy, reproduce, modify, transmit, publish, display or in any way commercially exploit any of the content of this section without the prior written consent of United Press International. Related Links SpaceDaily Search SpaceDaily Subscribe To SpaceDaily Express 
The Largest Ever Model Of The Universe Created
London, UK (SPX) Jun 06, 2005The Virgo consortium, an international group of astrophysicists from the UK, Germany, Japan, Canada and the USA released June 2nd, the first results from the largest and most realistic simulation ever of the growth of cosmic structure and the formation of galaxies and quasars. |
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