Errors in models used to interpret gravitational wave signals could misleadingly suggest deviations from relativity, a new study warns.
This year’s prize highlights "the darkest secrets of the universe."
The merger occurred when the universe was half its current age, and it may have produced the first known black hole of intermediate size
Theoretical astrophysicists predict that a glowing halo just outside the event horizon should surround all black holes.
Scientists may soon be able to observe a dramatic, long-predicted consequence of Einstein’s theory of general relativity.
Refined instruments reduce noise at the quantum level, allowing for discoveries of more distant gravitational waves.
Marvel at the lives and deaths of stars across the universe.
Astrophysicists devised a new theory that may explain the formation of black holes with masses exceeding 50 times that of our own sun.
Enjoy the start of astronomical autumn with black holes, a comet, star clusters and other stunning images.
Appreciate anniversaries marked by moonwalks and stellar fireworks this month
Gaze upon halos of light, streams of interstellar gas, and nearby Earthlike planets this month.
Elusive intermediate mass black holes may hold clues to how their more common supermassive cousins form.