In 2018, a galaxy about 270 million light-years away from Earth exhibited a major increase in activity. It quieted down again by 2020 -- only to dramatically increase its output again in 2023. At that ...

Scientists have discovered a new supermassive black hole directing a beam of energy toward our planet. This mysterious object ...

Nick Hague and Suni Williams spent six hours working on NICER, AMS and other equipment outside the International Space ...

NASA astronaut Don Pettit has snapped a striking shot of the super-bright comet racing past our planet for the first time in ...