TUCSON, Arizona, Oct. 5 (TNSres) -- The University of Arizona issued the following news release: Every second, more than 3,000 stars are born in the visible universe. Many are surrounded by what astronomers call a protoplanetary disk - a swirling "pancake" of hot gas and dust from which planets form. The exact processes that give rise to stars and planetary systems, however, are still poorly understood. A team of astronomers led by University of Arizona researchers has used NASA's James Webb   more