Astronomers got the result by tracking the movement of a star as it passed through the gravitational field of a black hole The black hole at the centre of our galaxy has helped astronomers confirm ...

This is the gargantuan black hole that lives at the centre of our galaxy, pictured for the very first time. Known as Sagittarius A*, the object is a staggering four million times the mass of our Sun.

The PRIMA space telescope would observe the cosmos in far-infrared light, while AXIS would be an orbiting X-ray detector.