13-09-17 A group of international scientists including a Lawrence Livermore National Laboratory researcher have confirmed that life really could have come from out of this world. The team shock compressed an icy mixture, similar to what is found in comets, w...

13-01-09 Comets trailing wispy（纤细的） tails across the night sky are a beautiful byproduct of our solar system's formation, icy leftovers from 4.6 billion years ago when the planets coalesced from rocky rubble. The discovery by astronomers at the Universi...

12-07-13 Scientists have long believed that comets and, or a type of very primitive meteorite（陨星） called carbonaceous chondrites（碳粒陨星） were the sources of early Earth's volatile elements -- which include hydrogen, nitrogen, and carbon -- and possib...

10-06-14 Many of the most well known comets, including Halley, Hale-Bopp and, most recently, McNaught, may have been born in orbit around other stars, according to a new theory by an international team of astronomers（天文学家） led by a scientist from the S...