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Thread: A star orbiting the Milky Way’s giant black hole confirms Einstein was right

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    A star orbiting the Milky Way’s giant black hole confirms Einstein was right

    A star orbiting the Milky Way’s giant black hole confirms Einstein was right

    Decades of observations revealed the rotation of the star’s elliptical orbit

    By Emily Conover
    April 16, 2020



    The first sign that Albert Einstein’s theory of gravity was correct has made a repeat appearance, this time near a supermassive black hole.

    In 1915, Einstein realized that his newly formulated general theory of relativity explained a weird quirk in the orbit of Mercury. Now, that same effect has been found in a star’s orbit of the enormous black hole at the heart of the Milky Way, researchers with the GRAVITY collaboration report April 16 in Astronomy & Astrophysics.

    The star, called S2, is part of a stellar entourage that surrounds the Milky Way’s central black hole. For decades, researchers have tracked S2’s elliptical motion around the black hole. The researchers previously had used observations of S2 to identify a different effect of general relativity, the reddening of the star’s light due to what’s called gravitational redshift (SN: 7/26/18).

    Now, they’ve determined that the ellipse rotates over time, what’s known as Schwarzschild precession. That precession is the result of the warping of spacetime caused by massive objects, according to general relativity. A similar precession in Mercury’s orbit had stumped scientists before Einstein came along (SN: 4/11/18).

    While physicists have never found a case where general relativity fails, they are searching for any cracks in the theory that could help lead to a new, improved theory of gravity. The new study confirms that Einstein’s theory checks out once again, even in the intense gravitational environment around a supermassive black hole.


    * * *

    Source: A star orbiting the Milky Ways black hole validates Einstein | Science News
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    The first sign that Albert Einstein’s theory of gravity was correct has made a repeat appearance, this time near a supermassive black hole.

    Who knew? I thought that it was proven every time someone jumps up in the air & doesn't keep going up.

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    Quote Originally Posted by Old Tex View Post
    The first sign that Albert Einstein’s theory of gravity was correct has made a repeat appearance, this time near a supermassive black hole.

    Who knew? I thought that it was proven every time someone jumps up in the air & doesn't keep going up.
    That would be gravity in general; however, Einstein's general relativity adds some distinct wrinkles to the general theory.
    So let us stop talkin' falsely now
    The hour's getting late -- Jimi Hendrix

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    al was pretty smart,,,he invented pi...
    "The nose, knows"
    #walkaway


    "Drag them out and string them up!!!"
    @me...

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    Isaac Newton was the gravity guy they say, but when it came down to it the only thing he ever discovered was fags.

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    Quote Originally Posted by Captain Kirk! View Post
    Isaac Newton was the gravity guy they say, but when it came down to it the only thing he ever discovered was fags.
    I knew there was something 'off' with him, bum bangers the lot of 'em.
    “If you tell a lie big enough and keep repeating it, people will eventually come to believe it. The lie can be maintained only for such time as the State can shield the people from the political, economic and or military consequences of the lie. It thus becomes vitally important for the State to use all of its powers to repress dissent, for the truth is the mortal enemy of the lie, and thus by extension, the truth is the greatest enemy of the State.”
    JOSEPH GOEBBELS. (he never said this.)

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    Quote Originally Posted by Old Tex View Post
    The first sign that Albert Einstein’s theory of gravity was correct has made a repeat appearance, this time near a supermassive black hole.

    Who knew? I thought that it was proven every time someone jumps up in the air & doesn't keep going up.
    Gravity doesn't exist, according to the guy I used to work with. Who, in this day and age, was and still is convinced the earth is flat.
    “If you tell a lie big enough and keep repeating it, people will eventually come to believe it. The lie can be maintained only for such time as the State can shield the people from the political, economic and or military consequences of the lie. It thus becomes vitally important for the State to use all of its powers to repress dissent, for the truth is the mortal enemy of the lie, and thus by extension, the truth is the greatest enemy of the State.”
    JOSEPH GOEBBELS. (he never said this.)

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    Quote Originally Posted by Himlar Aspartan View Post
    Gravity doesn't exist, according to the guy I used to work with. Who, in this day and age, was and still is convinced the earth is flat.
    Depends on what you mean by existing. There is a reasonable argument to be made that what we call "gravity" is really an epiphenomenon that arises from the way that space-time and matter interact with each other.
    So let us stop talkin' falsely now
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    This is all above my pay grade.

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    Quote Originally Posted by Quark View Post
    This is all above my pay grade.
    Mine too, which is why I find it so much fun to dabble in it.
    So let us stop talkin' falsely now
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