Tanya Hill and Geraint Lewis

An artist’s impression of the path of star S2 as it passes very close to the supermassive black hole at the centre of the Milky Way. The very strong gravitational field causes the colour of the star to shift slightly to the red. (Size and colour exaggerated for clarity)

Einstein’s Theory of Gravity Tested by a Star Speeding Past a Supermassive Black Hole

Tanya Hill and Geraint Lewis 31/07/2018

For most places in the universe, where gravitational fields...