DARK MATTER HIDES, PHYSICISTS SEEK
Date: Tuesday, November 28, 2006 @ 22:39:25 GMT
Scientists don't know what dark matter is, but they know it's all over the universe. Everything humans observe in the heavens-galaxies, stars, planets and the rest-makes up only 4 percent of the universe, scientists say. The remaining 96 percent is composed of dark matter and its even more mysterious sibling, dark energy.
Full story at http://www.physorg.com/news83949702.html
COSMOLOGISTS EXPOSE FLAWS IN ANTHROPIC REASONING, November 28
Many scientists never liked it anyway, and now Glenn Starkman from Oxford/Case Western and Roberto Trotta from Oxford show that too many details-and too many unknowns-mean that anthropic reasoning gives inconsistent values of the cosmological constant, some that are far from current estimates. In their recent paper, "Why Anthropic Reasoning Cannot Predict Lambda" (Physical Review Letters), Starkman and Trotta find that different ways of defining the probability of observers in different universes leads to vastly different predictions of the cosmological constant.
Full story at http://www.physorg.com/news83924839.html