mei 022012
 
Solar system evolved faster than we thought

  A ‘faster-ticking clock’ indicates the early solar system may have evolved faster than we think, say researchers Our solar system is four and a half billion years old, but its formation may have occurred over a shorter period of time than we previously thought, says an international team of researchers from the Hebrew University [continue reading]

apr 032012
 
New Finding Affects Understanding of Formation of the Solar System

Notre Dame physicists determine new half-life for radioactive rare-earth atom A global collaboration including five University of Notre Dame researchers has revised the half-life of samarium-146 (146Sm), reducing it to 68 million years from 103 million years. The finding is published in the journal Science. The revised half-life, which is 34 percent shorter than the [continue reading]