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Einstein's theory of relativity aces its first black hole test
More than a century has passed since Albert Einstein gave us general relativity, and scientists are still testing the mind-bending theory.
Milky Way's supermassive black hole may have unseen siblings
Astronomers are beginning to understand what happens when black holes get the urge to roam the Milky Way.
Giant black hole pair photobombs Andromeda galaxy
It seems like even black holes can't resist the temptation to insert themselves unannounced into photographs. A cosmic photobomb found as a background object in images of the nearby Andromeda galaxy has revealed what could be the most tightly coupled pair of supermassive black holes ever seen.
Astronomers witness star's death, birth of new black hole
In 2015, a star tracked by astronomers since 2009, suddenly disappeared. New research suggests the star collapsed and became a black hole, but avoided the explosive violence of a supernova.
Black hole hidden within its own exhaust
Supermassive black holes, millions to billions of times the mass of our Sun, are found at the centers of galaxies. Many of these galactic behemoths are hidden within a thick doughnut-shape ring of dust and gas known as a torus. Previous observations suggest these cloaking, tire-like structures are formed from the native material found near the center of a galaxy.
Black hole measured 660 million times as massive as sun
It's about 660 million times as massive as our sun, and a cloud of gas circles it at about 1.1 million mph.
Supersized black hole discovery forces universal rethink
Our universe could be riddled with monster black holes, new research has suggested. The revelation comes after a black hole with a mass of 17 billion suns was found in a large, virtually isolated galaxy 200 million light years away, the Guardian wrote.
Black Hole jets hotter than expected
New observations of a jet-emitting black hole show astonishing temperatures inside the jets of 10 trillion degrees Kelvin — a toasty 18 trillion degrees Fahrenheit. This new measurement shows that quasars can blow far past the theoretical temperature limit of 100 billion degrees Kelvin (179 billion degrees Fahrenheit), which has scientists puzzled, wrote.
Smallest super massive black hole ever detected
Astronomers using NASA’s Chandra X-ray Observatory have identified the smallest super-massive black hole ever detected in the center of a galaxy.
Supermassive black hole swallows accepted theories
"Astronomers have discovered a black hole that is 12 billion times more massive than the sun" reported.

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