It’s the most energetic particle of its kind ever discovered, and scientists have no idea where it came from.
Tag: Black Holes (Space)
A Solstice of the Soul
For his next trick, your cosmic correspondent for the past quarter-century will (try to) retire.
Can Axions Save the Universe?
The hunt for dark matter is shifting from particles to waves named after a laundry detergent.
Two Black Holes are Giving the Cosmos a Fright
The ghosts of stars are up to their usual mischief.
Astronomers Spot a Black Hole with a Cosmic Wingspan
Astronomers have discovered a black hole emitting energy in jets longer than the width of 140 Milky Way galaxies.
A Famous Black Hole Gets a Second Look From Astronomers
Repeated studies of the supermassive black hole in the galaxy Messier 87 confirm that it continues to act as Einstein’s theory predicted it would.
How to Create a Black Hole Out of Thin Air
Black holes were thought to arise from the collapse of dead stars. But a Webb telescope image showing the early universe hints at an alternative pathway.
The Cosmos Is Thrumming With Gravitational Waves, Astronomers Find
Radio telescopes around the world picked up a telltale hum reverberating across the cosmos, most likely from supermassive black holes merging in the early universe.
The Biggest Explosion in the Cosmos Just Keeps Going
For three years, telescopes have monitored “one of the most luminous” events ever: a supermassive black hole consuming a gigantic cloud of interstellar gas.
A Fresh View of an Increasingly Familiar Black Hole
Radio astronomers have captured a wide-angle image of one of the most violent locales in the cosmos.