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Space & Astronomy

Astronomers discover closest known black hole to Earth

By T.K. Randall
November 10, 2022 · Comment icon 4 comments

Image Credit: International Gemini Observatory/NOIRLab/NSF/AURA et el.
Situated in our 'cosmic backyard', this newly discovered behemoth is ten times more massive than the Sun.
Black holes, which form when a giant star collapses in on itself at the end of its life cycle, possess a gravitational pull so great than nothing - not even light itself - can escape from it.

Fortunately, there are no black holes in our own solar system or anywhere near it, but as time goes on scientists have been discovering them at shorter and shorter distances away from us, indicating that we might not be quite as far away from our nearest neighbor as we had perhaps hoped.

Most recently, astronomers have identified a black hole - named Gaia BH1 - around 1,566 light-years away in a binary star system in the constellation Ophiuchus.

This might sound like a long way away (and it is), but it also happens to be half the distance of the former nearest known black hole and there are likely to be others much closer than this.
The discovery is also significant because the star system itself is particularly unusual.

"While there have been many claimed detections of systems like this, almost all these discoveries have subsequently been refuted," said astrophysicist and study lead author Kareem El-Badry.

"This is the first unambiguous detection of a sunlike star in a wide orbit around a stellar-mass black hole in our galaxy."

What's interesting here is that this black hole would have started out as a star 20 times more massive than our Sun and would have ballooned out at the end of its life, consuming everything in its path.

How its companion star is still present, therefore, remains a mystery.

Source: Live Science | Comments (4)

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Recent comments on this story
Comment icon #1 Posted by jethrofloyd 1 year ago
I hope, in the future it doesn't get close enough to swallow the Earth.
Comment icon #2 Posted by Jon the frog 1 year ago
Earth will be long gone, swallowed by our own dying star, the sun...
Comment icon #3 Posted by Poncho_Peanatus 1 year ago
Maybe the influence of this black hole is what's causing the Mandela effect
Comment icon #4 Posted by NCC1701 1 year ago
Well, we can always send Bruce Willis to blow up the bloody thing.

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