Some rare galaxies exhibit a green glow thanks to the presence of doubly ionized oxygen. Oxygen is the 3rd most abundant element in the universe: about 1% of all the atoms, by mass.
Read more at Forbes…
Some rare galaxies exhibit a green glow thanks to the presence of doubly ionized oxygen. Oxygen is the 3rd most abundant element in the universe: about 1% of all the atoms, by mass.
Read more at Forbes…
