The constellation Sagittarius, 8000 light-years away, imaged by the Hubble Space Telescope. Until recently it was thought that just one star lies in the centre of this maelstrom. Now it is theorised there are three, each with 100 times the mass of our Sun. The matter that we see is just 4.507034% of mass. The hidden mass is responsible for sculpting those immense pillars. There is far more to our Universe than meets the eye.