Is Sofia a radio telescope proper? - Astronomy gsusigmanu.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from gsusigmanu.org Daily Mail and Mail on Sunday newspapers.
Using data from the Gaia telescope - which created a map of 1.8 billion stars in the Milky Way - researchers estimated the total mass of our galaxy to be just 200 billion times that of the sun.