Why Are Green Galaxies So Rare?, MessageToEagle.com

Are K-type main sequence stars which have planetary systems basically likely to have alien lives or even alien civilizations upon the planets which orbit them? - Quora

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Will A Milky Way Supernova Be Visible From Earth In The Next 50 Years?

Throwback Thursday: Seeing Through Our Galaxy, by Ethan Siegel, Starts With A Bang!

This Is Why Some Galaxies Have A Green Glow, Even Though There Are No Green Stars

Green With Envy: Why Green Galaxies Are So Rare

Rare 'green pea' galaxy may be the most 'chemically primitive' galaxy ever discovered

Do you think that there is a planet with advanced aliens somewhere out there in the universe? - Quora

Astronomy's Most Perfect Ring Galaxy, Hoag's Object, Is Still A Mystery After 70 Years, by Ethan Siegel, Starts With A Bang!

Earliest, Brightest Galaxies Shine A Ghostly Green In Surprising New Find

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It's Alive! Part 2: The Dark Bio-sphere, Plasma Lifeforms & The A.I Bridge Between Alternate Realities