Earliest galaxies got the green light
Emission of key color wavelength points to superhot first generation stars
GREEN GALAXIES Galaxies in the early universe emitted lots of green light, such as seen in this nebula (NGC 6826) in the Milky Way.
B. Balick, J. Alexander, A. Hajian, Y. Terzian, M. Perinotto, P. Patriarchi and NASA