Using data gathered by the NASA/ESA Hubble Space Telescope, astronomers have calculated the mass inflow and outflow rates of cool ionized gas around our Milky Way Galaxy and found an unexpected and so-far unexplained surplus of inflowing gas. This illustration envisions the Milky Way Galaxy’s gas recycling above and below its stellar disk. Image credit: NASA / ESA / D. Player, STScI. Prior to this new study, astronomers knew that the galactic gas...
