Produced by: Mohsin Shaikh
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Weighing 7 times more than the Sun, this black hole drifts alone through the galaxy, unseen and undetectable by normal means—until it warped starlight itself.
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Discovered via gravitational microlensing, it momentarily magnified a distant star’s light—a phenomenon Einstein predicted, now used to spot the unseeable.
Credit: NASA
The microlensing event lasted 270 days—rare and long—giving astronomers a rare window to pin down mass and motion with stunning precision.
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No X-rays, no accretion disk, no glowing companion—just warped starlight. That absence of light confirmed it: this was a black hole with no partner.
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Einstein’s general relativity not only predicted this light-bending—it also gave scientists the math to measure an invisible object’s mass.
A years-long scientific standoff is now resolved. First thought to be a neutron star, new data pushed both rival teams to the same dark conclusion.
This is the first confirmed “rogue” black hole—unbound, unaccompanied, and moving freely across the Milky Way’s depths.
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Astronomers believe there may be hundreds of millions more of these solitary black holes—each a silent remnant of a stellar death.
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NASA’s Roman Space Telescope, launching in 2027, promises to uncover a swarm of these elusive wanderers with unmatched microlensing power.