Twisted by Gravity's Grip The supermassive black hole at the heart of our galaxy, Sagittarius A (Sgr A ), has long fascinated astronomers with its immense gravity warping spacetime around it.
The recent discovery of S301, a star orbiting Sgr A at an unprecedented proximity, offers a unique opportunity to study this phenomenon up close.
Astronomers have long known that Sgr A 's spin is not directly observable due to the effects of general relativity on spacetime.