A new black hole found, may be closest to Earth
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How small can a black hole be? For many decades, astronomers have worked to answer this question by matching the black holes in our corner of the universe.
They've found plenty of large and medium-sized ones over the years - including a supermassive monster at the center of our galaxy. But until recently, they have seen no signs of smaller ones, and this has presented a long-standing mystery in astrophysics.
Now, astronomers have discovered a black hole with only three times the mass of the Sun, making it one of the smallest black holes ever found—and it's the closest known black hole at just 1,500 light-years from Earth.
"The discovery means there are many more [smaller black holes] that we could find," says Tharindu Jaisinghe, an astronomer at Ohio State University and lead author of a new paper detailing the discovery.
In Monthly Notices of the Royal Astronomical Society. The search "should create a push to find these systems."
Jaisinghe and his colleagues have called the object "unicorn", partly because it is unique, and partly because it was found in the constellation Monoceros, which was named by ancient astronomers after the Greek word for unicorn.
By studying this unicorn and other such objects, researchers hope to understand what happens to stars in the final moments of their lives and why some of them collapse to become black holes, while others leave behind dense stellar ...
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