Why NASA Wants Your UFO VideosDr. David Spergel, who headed a vaunted panel on unexplained aerial phenomena, explains how everyday citizens can solve the mystery.
America Does Something Right for OnceThe Webb telescope deployed its massive and sensitive sunshield, marking a difficult step in launching the device 1 million miles away from Earth.
SpaceX Launches Four Astronauts to Space StationThe team blasted off on Friday, starting a 23-hour trek to the International Space Station on a capsule from Elon Musk’s commercial rocket company.
Scientists Find Mystery Mass Under Moon’s SurfaceBaylor scientists estimate that the big metal chunk below a lunar crater weighs 4.8 quintillion pounds, and may be left over from an ancient impactor.