Barnard’s star, a 10-billion-year-old red dwarf just 6 light-years from Earth, is still very active and potentially destructive for the atmospheres of any exoplanets orbiting around it, according to new research led by University of Colorado astronomers. This illustration shows radiation from flares from a red dwarf star like Barnard’s star eroding the atmosphere of an orbiting, rocky planet. Image credit: NASA / CXC / M. Weis. Barnard’s star,...