Anonymous Coward writes:
https://www.businessinsider.com/alien-civilizations-may-have-already-colonized-galaxy-study-2019-8
The Milky Way could be teeming with interstellar alien civilizations — we just don't know about it because they haven't paid us a visit in 10 million years.
A study published last month in The Astronomical Journal[$] posits that intelligent extraterrestrial life could be taking its time to explore the galaxy, harnessing star systems' movement to make star-hopping easier.
The work is a new response to a question known as the Fermi paradox, which asks why we haven't detected signs of extraterrestrial intelligence.
(Score: 1, Insightful) by Anonymous Coward on Tuesday September 10 2019, @12:27PM
Nice to see them crediting Kim Stanley Robinson for Aurora, but CiXin Liu probably deserves a mention for Dark Forest theory:
The galaxy is filled with civilizations but nobody reveals themselves for fear of getting annihilated by other civilizations.
https://bigthink.com/scotty-hendricks/the-dark-forest-theory-a-terrifying-explanation-of-why-we-havent-heard-from-aliens-yet [bigthink.com]
This sentiment was echoed by Stephen Hawking:
https://www.quora.com/What-is-Stephen-Hawkings-opinion-on-Fermis-Paradox [quora.com]