ScienceScientists reconstruct ancient impact event bigger than 'dinosaur killer' blast Ancient asteroid's impact on Earth dwarfed the better-known 'dinosaur-killer' event, scientists say. The asteroid was as big across as Rhode Island and may have carved out a crater in the Earth's crust around 300 miles wide.by Jim Algar
ScienceExpansion of universe measured with best precision ever, using BOSS quasar studyby James Maynard
ScienceSpace telescope yields tantalizing new clues to existence of dark matter in our Milky Way Galaxyby Jim Algar
ScienceOne never asks a lady her age, but scientists have put a new figure on the birth date of our moonby Jim Algar
ScienceMineral used to estimate amount of water on moon 'can't be trusted,' scientists sayby Jim Algar