The Missing Fuel: How Astronomers Study Galaxies That No Longer Form Stars Some galaxies remain exceptionally luminous even though they produce scarcely any new stars. Much of its light may originate from an ageing stellar population formed billions of years ago, even though the conditions needed for further star formation https://bulletinnest-insightfeed788.thelateblog.com/43144577/the-blog-on-fermi-paradox-and-alien-life