Liked on YouTube: Astronomers Track Star Dancing Around Black Hole In Proof Of Albert Einstein Theory!

Astronomers Track Star Dancing Around Black Hole In Proof Of Albert Einstein Theory!
From its definition, to how it proves Albert Einstein right, and more! Join me as we explore how Astronomers track a star dancing around black hole in proof of Albert Einstein theory! Subscribe for more videos: https://www.youtube.com/c/InsaneCuriosity?sub_confirmation=1? When it comes to space, there's a lot out there that is only thought about in terms of theory. Mainly we BELIEVE that something out there is doing one thing, but until we can definitively prove it, it's just speculation. A great example of this is the orbit of a star around a black hole. Two different legendary scientists had different theories about how this would go, and now, one of them has been proven definitively right. Scientists spent 27 years gathering exact measurements to demonstrate how the orbit of the star, known as S2, is not shaped like an ellipse, as predicted by Isaac Newton's gravity theory, and published the findings in the journal Astronomy & Astrophysics. Instead, it travels a route around Sagittarius A, a huge black hole at the centre of the Milky Way, to trace a rosette-like pattern when looked at from above. Chilean astronomers used the European Space Observatory’s Very Large Telescope, which sits on a mountain in Chile's expansive Atacama desert, to identify the star's orbit. Typically stars and planets have an elliptical, or non-circular orbit, and move nearer, then further away, from the object they're circulating. However S2's orbit precesses, so the location of its closest point to the supermassive black hole alters with each turn. Each orbit is rotated from the place of the previous one, so a rosette formation is created and it appears as if the star is dancing around the black hole. Which is in direct contrast to what Isaac Newton said, BUT, was directly in line with what Albert Einstein stated over 100 years ago. That's right, Albert Einstein had a feeling that this stars orbit would be more rosette-like, and he was right! Before we continue, like or dislike the video so we can continue to improve and make the best videos possible for you the view! Also, subscribe to our channel so you don't miss ANY of our weekly videos! Einstein published his general theory of relativity in 1915. It's recognised as a foundation of modern physics which helps scientists understand the forces of gravity, but had never previously been proven in the existence of a star orbiting a supermassive black hole. Reinhard Genzel, a director at the Max Planck Institute for Extraterrestrial Physics (MPE) in Germany and programme leader, said the first evidence of general relativity was seen in the orbit of Mercury around the Sun. He said: “One hundred years later we have now detected the same effect in the motion of a star orbiting the compact radio source Sagittarius A at the centre of the Milky Way." Einstein predicted how much the star's orbit changes, and now the data collected by scientists exactly matches his theory. The effect is known as Schwarzschild precession, and has never been measured before for a star around a supermassive black hole. Which is why this discovery is so important. It may have taken a very long time to get to this conclusion, but it's been reached now, and thus, we know more about stars act in the face of a supermassive black hole. Once every 16 years, S2 moves in towards the black hole to a closest distance of less than 20 billion kilometres, which is 120 times the distance between the sun and Earth. The findings are also significant in further understanding the mysteries of supermassive black holes. French lead scientists on the project, Guy Perrin and Karine Perraut said: “Because the S2 measurements follow general relativity so well, we can set stringent limits on how much invisible material, such as distributed dark matter or possible smaller black holes, is present around Sagittarius A. “This is of great interest for understanding the formation and evolution of supermassive black holes.” Additionally, the discovery adds to the evidence that Sagittarius A* - a staggering 26,000 light years away - is a supermassive black hole, and approximately four million times the mass of the sun. Which is quite impressive in its own right for the record. Between the star rotation discovery, and getting more information about Sagittarius A, this is quite a big deal. Scientists have been aiming to get more information on black holes of various sizes wherever they can. The problem with that though is that black holes are invisible to the naked eye because they don't let light escape them. Thus, we have to use various specialized devices and things like X-Rays to track down where they are and study them. With a star rotating around one, that helps get us even more information while also detailing the star itself. #InsaneCuriosity #TheoryOfRelativity #RecentSpaceDiscoveries
via YouTube https://www.youtube.com/watch?v=l-b37o4s3i0