The answer is: a radio telescope that can track hydrogen in the Milky Way as well as the velocities ... as per the above graphic by [Jack Phelps]. The solid lines are low-loss microwave coax ...
Jamie Carter is an award-winning reporter who covers the night sky. The core of the Milky Way in Sagittarius low in the south over the Frenchman River valley at ... [+] Grasslands National Park ...
The total mass of the Milky Way is estimated to be only two hundred billion times that of the sun (2.06 x 10 11 solar masses), marking a significant downward revision—approximately four to five ...