general relativity

Atomic clock experiment shows Einstein’s general relativity is right

by

Physicists have measured time dilation on the smallest scale ever using an atomic clock made of thousands of ultracold atoms formed into a stack of pancake-shaped blobs Physics 16 February 2022 By Alex Wilkins Time dilation has been measured inside a tiny atomic clock Jacobson/NIST The world’s most precise atomic clock has confirmed that the … Read more

We’ve seen our galaxy’s huge black hole more clearly than ever before

by

Astronomers have observed Sagittarius A* – the supermassive black hole at the centre of our galaxy – closer than ever before, and Albert Einstein’s general theory of relativity still holds up Space 14 December 2021 By Leah Crane Stars orbiting very close to Sagittarius A* (centre), the supermassive black hole at the heart of the … Read more

Einstein: A pair of pulsars in a tight embrace have proved his theories right again

by

After monitoring a pair of pulsars in tight orbit around one another for 16 years, astronomers conclude that their behaviour is consistent with Einstein’s predictions Space 13 December 2021 By Chen Ly Artistic impression of the double system, where two active pulsars orbit each other in just 147 minutes Michael Kramer/MPIfR Einstein’s famous theory of … Read more