What is the total mass of our Milky Way Galaxy? The short answer, so far, is 7 x 1011 solar masses, says a team of astronomers at McMaster University, Canada. Artist’s conception of the Milky Way Galaxy. Image credit: Nick Risinger. Measuring the total mass of the Milky Way, or any galaxy, is particularly difficult. Galaxies include not only stars, planets, moons, gases, dust and other objects and material, but also dark matter. Astronomers, however,...
