In the early photo voltaic program, a “protoplanetary disk” of dust and gas rotated all over the sun and sooner or later coalesced into the planets we know nowadays. A new assessment of historical meteorites by scientists at MIT and elsewhere implies that a mysterious gap existed inside this disk […]
Cosmic
The highest-energy cosmic rays come from subatomic interactions within star clusters, not supernovae, say Michigan Tech physicists and collaborators. For decades, scientists assumed the cosmic rays that on a regular basis bombard Earth from the considerably reaches of the galaxy are born when stars go supernova — when they increase […]