Astronomers have been confounded by recent evidence that the universe expanded at different rates throughout its life. New ...

NASA's Hubble Space Telescope has discovered a tidal disruption event 300 million light years away. The donut shaped remains of a star were found around a hungry black hole. Credit: NASA's Goddard Spa ...

The two astronauts have a busy day ahead of them. Hague and Williams will "patch light leaks in the NICER X-ray telescope, ...

T he European Space Agency’s Gaia mission has almost completely depleted the cold gas propellant that kept it spinning and able to scan the sky, so it has decided to nominally end science operations ...