At the edge of our solar system, a host of large, icy bodies make up the Oort cloud, which appears to sport two spiral arms reminiscent of a disk-shaped galaxy. New research founded upon a ...

Scientists may have discovered why the orbits of some planets decay, ultimately leaving these worlds to "death spiral" into their stars. This discovery may help astronomers spot which planets in ...

March 12 (UPI) --NASA and SpaceX successfully launched their SPHEREx and PUNCH missions into orbit Tuesday night from Vandenberg Space Force Base in California, 24 hours after poor weather and a ...