A Lonely Whirling Black Hole Discovered

This is the first time that a black hole has been discovered that is traveling alone through space.

The existence of black holes is one of the predictions of the general theory of relativity, which was first proposed in 1915. Many black holes have been discovered so far in the universe.

According to scientific evidence, huge black holes can be found at the center of almost all galaxies, if not all of them. Additional waves associated with the merger of black holes have been detected in prior examinations carried out with gravitational wave detectors. These waves are thought to have formed during the merger of black holes.

Until recently, however, there was no evidence of a black hole orbiting in space all by itself. An multinational scientific team has announced the discovery of a single black hole in space, which is the first time this has been done. At a speed of around 45 kilometers per second, the celestial body is traveling across space at a distance of approximately 5,000 light-years from Earth's surface.

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Affecting light, according to the general theory of relativity, gravitational forces are also involved. One of the consequences of this circumstance is that heavenly bodies appear to shift in their apparent positions. In a similar way to how lenses change the direction of light moving near them and focus it on a certain point, massive objects modify the direction of light flowing near them and lead it towards the Earth. As a result, the observed position of the heavenly body from the earth changes.

As a result of the influence of huge celestial bodies on the direction of light coming from a star to the Earth, the star appears brighter and larger than it actually is. This is referred to as gravitational lensing, and it operates in a similar way to how lenses focus light to make objects appear larger and brighter than they actually are by magnifying them. It is also possible for an item to appear to be in numerous locations at the same time due to gravitational lensing.

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As a result of gravitational lensing, the observed locations of celestial bodies shift slightly. In some cases, an object may appear in many locations at the same moment in a single frame.

Gravitational lensing was also employed to detect the newly discovered black hole, which was discovered by accident. The sudden brightening of a star 20,000 light-years away from Earth was first observed in 2011 and was confirmed in 2012. It was the researchers' belief that the star was being followed because of the lensing effect of an invisible black hole that they kept following it.

Small changes in the measured position of the star were observed in the future, which was confirmed by subsequent observations. This means that it has been determined that the gravitational effect of a celestial body that cannot be directly observed is responsible for the changes in appearance of a star's appearance. Using data on the lensing effect and the shift in position, it was anticipated that the black hole's mass would be around seven times that of the Sun.

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Reference:

• https://www.iflscience.com/space/astronomers-discover-black-hole-orbiting-%E2%80%98spinning%E2%80%99-star-first-time/