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Extraterrestrial

Is our galaxy filled with dead civilizations ?

December 20, 2020 | Comment icon 65 comments



Has most intelligent alien life wiped itself out ? Image Credit: CC BY-SA 3.0 Luciano Mendez
A new study has suggested that most alien civilizations may have already destroyed themselves.
Finding evidence that we are not alone in the universe has been a life-long pursuit for many astronomers, despite the task being akin to searching for a needle in a haystack.

Now though, a new study written by three physicists from the California Institute of Technology ( as well as one school pupil ) has put forward the rather unfortunate conclusion that most of the intelligent alien civilizations in the Milky Way galaxy will have most likely destroyed themselves long ago.

The research involved a combination of modern astronomy and statistical modelling to calculate the emergence and destruction of intelligent civilizations over time.

The study has effectively produced what could be considered to be an updated version of the famous Drake equation - a formula created by astronomer Frank Drake and popularized by astronomer Carl Sagan which attempted to determine the number of intelligent extraterrestrial civilizations in our galaxy based on multiple factors such as the number of planets that form and how many of those develop life.
"Since Carl Sagan's time, there's been lots of research," said study co-author Jonathan H. Jiang.

"Especially since the Hubble Space Telescope and Kepler Space Telescope, we have lots of knowledge about the densities [of gas and stars] in the Milky Way galaxy and star formation rates and exoplanet formation ... and the occurrence rate of supernova explosions."

The study authors ultimately determined that any civilizations that do exist today in the Milky Way will be relatively young, with most of the older ones having already wiped themselves out.

They will also be situated mainly along a band of sun-like stars approximately 13,000 light-years from the galactic core.

Given that we have no idea how long it might take any given civilization to destroy itself, however, it would be fair to say that there is still a significant margin for error with these findings.

Source: Live Science | Comments (65)


Recent comments on this story
Comment icon #56 Posted by Piney 1 year ago
There's a rescue in the upper Pine Barrens. The handlers get their arms pulled from their sockets monthly. Screw that. Bonobos are nice though. But they are ruled by alpha females.†
Comment icon #57 Posted by Noteverythingisaconspiracy 1 year ago
I have recently come across a site that does a great job at explaining the events that had to happen before multi cellular life arose on Earth. https://www.youtube.com/channel/UC_aOteuWIY8ITg7DQQspG1g Its well worth a look.
Comment icon #58 Posted by astrobeing 1 year ago
The channel also has a good episode on the Oxygen Catastrophe. It shows how easily simple life can destroy all life on a planet.
Comment icon #59 Posted by Roccafella 1 year ago
The only ones that have destroyed them selves is the species of humans like our selves. I believe if you do some deep research you will find that war only comes from what they created who is they, is (MAN) we are human they not only created human but they created a lot of species of humans, humans are the only species that war on each other even tho we may look different we all are much the same blacks come from an species of creatures that were here and still here just as well as white species and so on the reason why we all became intelligent is because the forbidden mixing of the species it... [More]
Comment icon #60 Posted by Noteverythingisaconspiracy 1 year ago
That was kinda my point. But it also shows that life is adaptable.
Comment icon #61 Posted by Roccafella 1 year ago
† I always say who am i im know one nothing but some Low life in New Orleans but I came into contact with theses pple or creatures dat have been with me since i was a little kid they didnt look like us witch i come into contact with some that looks like us im know one i didnt look for dem i didnt know anything of dem they foud me. We've been lied to but we are so stuck in the box some you should stay there.† † †
Comment icon #62 Posted by Roccafella 1 year ago
All of those shows that talks about the age of the planet is so so so funny to me. Its almost like saying they know the age of the pyramids in EGYPT.†
Comment icon #63 Posted by Dejarma 1 year ago
@Jon the frog... you're confused= you must feel you†are turning dumber then
Comment icon #64 Posted by Jon the frog 1 year ago
nope... research lately deomonstrate that the species have reached it's peak and we are going down in IQ.... caused by easier life, bad nutrition and lacks of natural selection. Don't know why you are trolling me ?
Comment icon #65 Posted by Dejarma 1 year ago
trolling you?? oh ok then.. i'll never respond to anything you say again- i'll leave you to it. have fun


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