Volunteer astronomers sifting through infrared images from a retired NASA telescope have spotted a faint object racing ...

NASA is pulling the plug on one of its great observatories -- the Spitzer Space Telescope -- after 16 years of scanning the universe with infrared eyes. The end comes Thursday when ground controllers ...

NASA deployed a fleet of spacecraft and ground-based observatories to photograph interstellar comet 3I/ATLAS as it crossed through the inner solar system, producing the most detailed views ever ...