These bursts release more energy in a few seconds than the sun would produce in its lifetime.
In 1987, a star exploded, creating the brightest supernova to light up Earth's skies in 400 years. That star's corpse has been missing for 30 years. Now, researchers think they've found it.
New calculations suggest that some black holes can grow hair, but they can't keep it for long. Alas, they go bald again.
An ambitious new fleet of spacecraft could reveal whether space-time is smooth or chunky, and in doing so the ultimate nature of reality.
Standing on one moon, you'd see the other pass overhead twice before ducking around to pass on the other side.
You're about to take a dip into the inky blackness of a giant black hole and see what's on the other side of that enigmatic event horizon. What will you find inside? Read on, brave explorer.
An international team of scientists has created the most detailed large-scale model of the universe to date, a simulation they call TNG50.
Humans have questions about alien life. But those beings, if they exist, likely have some questions of their own about humans, queries we may want to answer before we find any life beyond Earth.
An intervening cluster of galaxies acts like a cosmic microscope and bends and magnifies light from a distant galaxy.
The sun's surface is covered by millions of enormous plasma jets known as spicules at any given moment. Now, researchers think they know why.
As humankind's ancestors were learning to walk upright, a star was launched out of the supermassive black hole at the center of our galaxy at a staggering 3.7 million mph (6 million km/h).
Physicists think this might be the first of many hidden states of matter that could be uncovered using laser flashes.
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