We watched a star orbit the supermassive black hole at the centre of our galaxy for 24 years and its light is stretched just as Einstein predicted it should be
Source:
https://www.newscientist.com/article/2211184-star-hurtling-around-a-giant-black-hole-proves-einstein-right-again/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home