A Star Orbiting The Supermassive Black Hole Sagittarius A Proves, Again, Einstein’s Theories On Gravity

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A star orbiting the supermassive black hole Sagittarius A from the center of Milky Way proves, again, that Einstein’s theories on gravity were correct. About one hundred years ago, Albert Einstein postulated the general theory of relativity and asserted that the gravity is the matter curving the fabric of spacetime.

During a study whose report was issued today in the Astronomy & Astrophysics journal, a group of scientists presents their observation of a general relativity trademark known as gravitational redshift. This observation is the first time when the Einstein’s theory was validated in the area in the close vicinity of a supermassive black hole, Sagittarius A, in this case.

The gravitational redshift occurs when the light that escapes a region with a strong gravitational field and the light waves are stretched out becoming reddish in appearance.

Einstein’s general theory of relativity proved correct, once again, now in a star orbiting the supermassive black hole at the center of Milky Way, Sagittarius A

Employing the Very Large Telescope (VLT), in the Atacama Desert of Chile, a science team dubbed as GRAVITY Collaboration managed to prove that the light from a star passing near the supermassive black hole at the center of Milky Way, the Sagittarius A, obeyed the principle of gravitational redshift stipulated by the Einstein’s general theory relativity.

Gravitational redshift has been observed before, but never in a star orbiting a supermassive black hole. “That’s completely new, and I think that’s what makes it exciting, doing these same experiments not on Earth or in the solar system, but near a black hole,” explained Clifford Will, a physicist at the University of Florida in Gainesville.

During May 2018, the star closed by the supermassive black hole at 20 billion kilometers and accelerated to 3% of the speed of light which is very fast for a star. The scientists observed the gravitational redshift as stipulated by the Einstein’s general theory of relativity.

 


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