When the Stars Go Blue
Giant blue stars ionizing hydrogen gas give dwarf galaxy IC 10 its signature blue glow, and signal ongoing star formation. IC 10 is one of tens of dwarf galaxies in our Local Group, which is dominated by the giant Milky Way (our galaxy) and Andromeda Galaxy.
Credit: Canada-France-Hawaii Telescope/Coelum
This is truly astonishing. I mean wow.