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Comments by "Digital Footballer" (@digitalfootballer9032) on "The Best Earth-like Exoplanet Has 4 Major Problems" video.
When you start adding up all the variables that would make an exoplanet not just merely habitable, but also a healthy and relatively safe environment, there are many. All the factors mentioned in this video, as well as factors like how much oxygen in the atmosphere, weather extremes, does the planet have a large moon like earth, does the system have a Jupiter analog that could protect the planet from bombardment of asteroids and comets, what is the rotation of the planet, and so many more. The odds of finding something "turn-key" would be very low, considering all the important factors that must be within at least a small variance of earth in order for it to be comfortably habitable.
54
This is in the same vein as the whole "send us money and we will name a star after you and send you a certificate". I don't think future generations are going to be saying, "hey look, it's the John Smith star, right next to the Mike Johnson star" 😂
16
Very good point. I might also add that we are in a geological "Goldilocks zone" as well. There have been and will be again, periods of time where the average temperature of the earth is much hotter or colder and even fewer, of any, regions of the earth would be habitable.
8
I suspect if we do ever find highly advanced life out there, that K-type star systems will be where we find it, as the longevity of these stars is much greater, giving any civilization orbiting one much more time to advance. If we were to make the entire run without going extinct, we would have about another billion years before earth is no longer habitable. Yes, that's a lot of time, but I would think if any super advanced civilization is out there (like type-2 and up) they would need more than a billion years and change to get there. A K type star would offer this kind of longevity on the home planet, assuming the planet itself is stable.
5
Just my unscientific opinion, but I feel like tidal lock presents one of the biggest challenges to habitability. Things like gravity, atmosphere, etc while challenging could be overcome with the right technology. Even the rotation of the planet could be sped up or slowed down, in theory, with advanced enough technology. I think with tidal locking you are stuck. Two other factors I see as deal breakers are close proximity to a very active star, as well as a lack of giant planets in the outer orbits of a system to sweep up asteroids and comets.
4
I always thought the same thing. A narrow band of habitable area surrounded by certain death on both sides. Possibly tie in to the story groups or races that were banished to these regions, or some sort of rogue faction living in underground bunkers in these regions. Lots of great possibilities for a good sci Fi story.
3
It is also postulated that a planet orbiting a type F or K star could be even better than a G type star. They are cooler than a G but hotter than a red dwarf, are stable like a G type, and also are much longer lived than a G type star.
3
It did suck 😂
2
If humans are around long enough, and can develop good enough technology in this time period, I would agree that colonization of some of the larger moons in the outer system is the best answer when the sun gets bigger and hotter and makes earth no longer habitable. Mars would be a temporary solution but eventually will suffer the same fate as earth.
1
There's a whole lot of space to look at, we would need essentially a Dyson sphere of telescopes surrounding earth. Love the idea but probably not practical.
1
Or my first thought, if there is a planet out there very close to earth spec, it may already contain a technological civilization that wouldn't be too keen on us showing up 😂
1