In "At the Edge of Space," NOVA takes viewers on a spectacular exploration of the Earth-space boundary that's home to some of nature's most puzzling and alluring phenomena: the shimmering aurora ...

Day 22 of the 2024 Space Telescope Advent Calendar: the edge of a spiral. Located roughly 150 million light-years from Earth in the constellation Serpens, UGC 10043 is one of the somewhat rare ...