Every time this doomed star plunges through a supermassive black hole's accretion disk, it loses orbital energy and triggers a burst of X-rays.
The spiral galaxy NGC 3596 is viewed face-on in this NASA/ESA Hubble Space Telescope image that incorporates six different wavelengths of light.
Astronomers have caught a black hole far from the center of its galaxy ripping a star to shreds — offering for the first time evidence of a rogue supermassive black hole in action.
A first-of a-kind space weather "tabletop" exercise has revealed major weaknesses in America's preparedness for major solar storms.
A new image from Europe's Copernicus Sentinel-3 satellite shows the huge Antarctic iceberg A-23A stuck 45 miles (73 kilometers) off the coast of South Georgia Island.
The brilliant blue-white star lighting up the red nebula Sh2-46 hints at a dynamic and possibly fleeting encounter that could reshape the nebula's appearance over time.
After a pair of satellites failed to reach their desired orbit around the moon last year, China used a novel gravity "slingshot" tactic to get the satellites in the correct spot.
NASA is no longer asking U.S. companies for proposals to get the ice-hunting VIPER rover to the moon but still hasn't given up on the mission.
Plato, the European Space Agency's terrestrial planet hunter spacecraft, is seen after having 24 of its 26 cameras installed.
Earth's atmosphere pulses in sync with the sun's fiery outbursts, indicating it is more sensitive to solar activity than previously thought, according to new research.
