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Boffins determine there are at least 36 other civilizations in our galaxy
Posted on 7/3/20 at 5:03 pm
Posted on 7/3/20 at 5:03 pm
quote:
We present a cosmic perspective on the search for life and examine the likely number of Communicating Extra-Terrestrial Intelligent (CETI) civilizations in our Galaxy by utilizing the latest astrophysical information. Our calculation involves Galactic star formation histories, metallicity distributions, and the likelihood of stars hosting Earth-like planets in their habitable zones, under specific assumptions which we describe as the Astrobiological Copernican Weak and Strong conditions. These assumptions are based on the one situation in which intelligent, communicative life is known to exist—on our own planet. This type of life has developed in a metal-rich environment and has taken roughly 5 Gyr to do so. We investigate the possible number of CETI civilizations based on different scenarios. At one extreme is the Weak Astrobiological Copernican scenario—such that a planet forms intelligent life sometime after 5 Gyr, but not earlier. The other is the Strong Astrobiological Copernican scenario in which life must form between 4.5 and 5.5 Gyr, as on Earth. In the Strong scenario (under the strictest set of assumptions), we find there should be at least ${36}_{-32}^{+175}$ civilizations within our Galaxy: this is a lower limit, based on the assumption that the average lifetime, L, of a communicating civilization is 100 yr (since we know that our own civilization has had radio communications for this time). If spread uniformly throughout the Galaxy this would imply that the nearest CETI is at most ${17,000}_{-10,000}^{+33,600}$ lt-yr away and most likely hosted by a low-mass M-dwarf star, likely far surpassing our ability to detect it for the foreseeable future, and making interstellar communication impossible. Furthermore, the likelihood that the host stars for this life are solar-type stars is extremely small and most would have to be M dwarfs, which may not be stable enough to host life over long timescales. We furthermore explore other scenarios and explain the likely number of CETI there are within the Galaxy based on variations of our assumptions.
LINK
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Posted on 7/3/20 at 5:03 pm to Jim Rockford
I don’t understand any of that
Posted on 7/3/20 at 5:04 pm to Jim Rockford
quote:so you think people here know what those are?
Boffins
Posted on 7/3/20 at 5:08 pm to Jim Rockford
There was a girl in high school I would have sold my soul to spend a weekend boffin her brains out.
She got fat after having kids with 3 baby daddies and then was murdered by a boyfriend.
She never did choose men wisely.
She got fat after having kids with 3 baby daddies and then was murdered by a boyfriend.
She never did choose men wisely.
Posted on 7/3/20 at 5:08 pm to Jim Rockford
Bowfin
Posted on 7/3/20 at 5:11 pm to Jim Rockford
I think these nerds are just fricking with us when they release this shite
Posted on 7/3/20 at 5:12 pm to Jim Rockford
Posted on 7/3/20 at 5:13 pm to Jim Rockford
quote:
Boffin
Didn’t he get killed in a plane crash with Richie Valens?
Posted on 7/3/20 at 5:13 pm to Jim Rockford
what the frick did i just read
Posted on 7/3/20 at 5:14 pm to FearTheFish
quote:
I don’t understand any of that
That's not scary. What's scary is that there are an estimated 100 Billion Galaxies.
This post was edited on 7/3/20 at 5:20 pm
Posted on 7/3/20 at 5:14 pm to Ryan3232
Copy and paste of raw excel formulas
Posted on 7/3/20 at 5:16 pm to Jim Rockford
quote:
We present a cosmic perspective on the search for life and examine the likely number of Communicating Extra-Terrestrial Intelligent (CETI) civilizations in our Galaxy by utilizing the latest astrophysical information. Our calculation involves Galactic star formation histories, metallicity distributions, and the likelihood of stars hosting Earth-like planets in their habitable zones, under specific assumptions which we describe as the Astrobiological Copernican Weak and Strong conditions. These assumptions are based on the one situation in which intelligent, communicative life is known to exist—on our own planet. This type of life has developed in a metal-rich environment and has taken roughly 5 Gyr to do so. We investigate the possible number of CETI civilizations based on different scenarios. At one extreme is the Weak Astrobiological Copernican scenario—such that a planet forms intelligent life sometime after 5 Gyr, but not earlier. The other is the Strong Astrobiological Copernican scenario in which life must form between 4.5 and 5.5 Gyr, as on Earth. In the Strong scenario (under the strictest set of assumptions), we find there should be at least ${36}_{-32}^{+175}$ civilizations within our Galaxy: this is a lower limit, based on the assumption that the average lifetime, L, of a communicating civilization is 100 yr (since we know that our own civilization has had radio communications for this time). If spread uniformly throughout the Galaxy this would imply that the nearest CETI is at most ${17,000}_{-10,000}^{+33,600}$ lt-yr away and most likely hosted by a low-mass M-dwarf star, likely far surpassing our ability to detect it for the foreseeable future, and making interstellar communication impossible. Furthermore, the likelihood that the host stars for this life are solar-type stars is extremely small and most would have to be M dwarfs, which may not be stable enough to host life over long timescales. We furthermore explore other scenarios and explain the likely number of CETI there are within the Galaxy based on variations of our assumptions.
Posted on 7/3/20 at 5:19 pm to Jim Rockford
hoping for a low gravity planet, so the average boiled crab is around 8 pounds.
Posted on 7/3/20 at 5:24 pm to Jim Rockford
Bet alien pussie is next level
Posted on 7/3/20 at 5:27 pm to Jim Rockford
How much grant money did they get to come up with this shite?
Posted on 7/3/20 at 5:28 pm to sand mountainDvalues
Probably get that space STD
Posted on 7/3/20 at 5:41 pm to TigerintheNO
quote:
hoping for a low gravity planet, so the average boiled crab is around 8 pounds.
You need to calibrate your gravity.
Posted on 7/3/20 at 5:47 pm to Jim Rockford
36 other civilizations and they are all still trying to figure out what’s up our asses...
Posted on 7/3/20 at 5:49 pm to Jim Rockford
But will they all die of Covid like the War of the Worlds aliens?
Posted on 7/3/20 at 5:54 pm to Jim Rockford
The Mormons were right all along
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