A new test of Albert Einstein’s theory of general relativity has proved the 20th Century physicist right again, this time using a supermassive black hole. Source: https://www.livescience.com/black-hole-image-shows-einstein-right-again.html
Tag: general relativity
New measurements of the solar spectrum verify Einstein’s theory of General Relativity
An international team of researchers led by the Instituto de Astrofísica de Canarias (IAC) has measured, with unprecedented accuracy, the gravitational redshift of the Sun, a change in frequency of the lines in the solar spectrum which is produced when the light escapes from the gravitational field of the Sun on its way to Earth. This work, which verifies one of…
Black Hole Photo Makes Einstein’s Theory ‘500 Times Harder to Beat’
“The first image of a black hole, captured in 2019, has revealed more support for Albert Einstein’s theory of general relativity,” reports CNN, adding that the new finding suggests his theory is now 500 times harder to beat. [W]hile light can’t escape the inside of a black hole, it’s possible for light to make a getaway in a region around the…
The Only Black Hole We’ve Ever Seen Has a Shadow That Wobbles
The supermassive black hole at the center of the M87 galaxy has a shadow crescent that moves, like a dancer in the dark. From a report: Over a year ago, scientists unleashed something incredible on the world: the first photo of a black hole ever taken. By putting together radio astronomy observations made with dishes across four continents, the collaboration known…
Are there more rogue planets than stars in our galaxy?
A new study suggests there are more rogue, free-floating planets – unconnected to any star – than stars in our Milky Way galaxy. NASA’s upcoming Nancy Grace Roman Space Telescope is expected to begin finding hundreds of them. Source: https://earthsky.org/space/rogue-planets-milky-way-roman-space-telescope…
Fastest star ever seen is moving at 8% the speed of light
In the center of our galaxy, hundreds of stars closely orbit a supermassive black hole. Most of these stars have large enough orbits that their motion is described by Newtonian gravity and Kepler’s laws of motion. But a few orbit so closely that their orbits can only be accurately described by Einstein’s theory of general relativity. The star with the smallest…
Gravity Error Detected?
jd (Slashdot reader #1,658) writes:
The large scale maps of the universe show something is seriously wrong with current models of gravity and dark matter. The universe simply isn’t clumping right and, no, it’s not the new improved formula. As you go from the early universe to the present day, gravity should cause things to clump in specific ways. It isn’t. Which…
Dance of 3 stars confirms Einstein’s ‘most fortunate thought’
Researchers in Europe have now confirmed the universality of free fall – which Einstein called his most fortunate thought – with extremely high precision. To do it, they spent 8 years tracking a triple star system containing a millisecond pulsar. Source: https://earthsky.org/space/pulsar-psr-j03371715-einstein-universality-of-free-fall…
What is the Big Bang?
In the view of modern cosmologists, the Big Bang is the event that marked the birth of our universe. Source: https://earthsky.org/space/definition-what-is-the-big-bang…
Einstein was right about how extremely massive objects fall in space
A crucial pillar of Einstein’s theory of general relativity has been tested with the motion of stars at the highest precision yet, and the theory has held up once again Source: https://www.newscientist.com/article/2245727-einstein-was-right-about-how-extremely-massive-objects-fall-in-space/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…