Sure, the universe is big. If you travel far enough, there is bound to be a planet with water and maybe breathable air. You might have to travel a few million years, though. And keep in mind that plants produced the oxygen here on earth by photosynthesis. So I’m not sure about how that’d happen on other planets. Maybe they can have oxygen for other physics reasons. Maybe they already have life on them. It’s difficult to quantify the statistical chance for that. But the universe is a big place.
If you question is if we can go there, the anwer is most certainly: No.
Earth is the only one. Even if we knew another planet humankind won’t be able to get there.
If we had the technology to terraform another planet, it would be far easier to just fix the climate on this planet. People like Elon Musk who are peddling this idea of terraforming Mars for habitation are charlatans.
To be fair, we know how to raise the temperature on a planet, but have never successfully lowered it
While I agree Earth first. But just like most humans you are underestimating our level of risk. There is a very legitimate reason to have a goal of not putting all our eggs in one planet. That’s just a much more long term goal than our climate issues, but we shouldn’t stop trying to progress our technology for that end.
True, but colonizing other planets is more distant a goal than making our own stable.
We will not accomplish any of this. Because we don’t even care for the biosphere of the planet we already have in the best state of “terrafoming” ever.
Humankind will speedily regress to much lower levels of organisation and technology soon. It’s inevitable.
“Have?”
If by “we” you mean humans, we only “have” one planet. And it’s habitable for now.
Aside from Earth, we have found some that might have liquid water, an oxygen-rich atmosphere, a relatively-close-to-Earth gravitational acceleration on its surface. But there’s no real likelihood that we’ll ever be able to get to any of those… like… ever. And I’d think probably even those would require some teraforming to be habitable.
I wish people would realize that terraforming is the only way we’re going to colonize other planets.
Sci-fi showed us landing on Earth-like planets and making a new home. Reality will show us dying in a completely alien biosphere as bacteria and viruses we have zero resistance against ravages our bodies the moment we’re exposed to it. And we’d expose the new biosphere to pathogens it has zero resistance to.
We might be able to adapt by living in a protected environment (i.e. our biosphere) and slowly exposing generations of our descendants to the new biosphere. But many, many of us would die in the process. Not to mention genetic mutations.
So… short answer is no, if you mean a self sufficient, self sustaining colony that could reasonably continue in perpetuity.
We just do not have the technology to pull that off at a basic level. Even with the best currently existing proposals, it would be massively, absurdly expensive, as well as dangerous, and far, far too many things could go wrong.
Now if you mean a non self sustaining colony, one that gets frequently resupplied, offers the option to go back home… then we have the Moon.
Despite what Elon thinks, Mars is not a realistic option for anything other than conducting a sadistic experiment.
If you mean … exoplanets? And just assume we have a warp drive to get colonists there?
Unless I am mistaken, there are a few that could possibly harbor some kind of life, but almost certainly not us.
I don’t think we even have a rudimentary atmospheric composition estimate for any of the exo’s that are in the Goldilocks zone, if any of them at all.
There is no planet B.
Earth is the only place that could sustain human life.
We have not found any other bodies with the basic composition, atmosphere or temperature to have even the remote potential for sustaining life, even with the most extravagantly optimistic technology and unlimited resources to apply it.
Nix, nada, no dice.
We are not getting off this rock - and if we fuck it up, we’re done.
Habitable.
Habital isn’t a word.
To answer your question, “no.” We have one and we’re already on it. It’s called Earth.
Define “have”. Know about? In our own solar system?
And under what conditions? Like, walking around on the surface? Living in some kind of underground chamber?
There’s nothing in our solar system where you can just hop out and roam around on the surface like you would on Earth and survive. The atmosphere alone doesn’t make it doable.
But there are attempts to find planets outside the solar system that might be habitable:
https://en.wikipedia.org/wiki/List_of_potentially_habitable_exoplanets
Problem is that interstellar travel takes a lot of doing. The furthest a human has gone as of 2024 is just beyond the Moon. We haven’t even gone to another planet in our solar system. And traveling to even the closest star system is a lot further away.
The Moon is about 1.3 light seconds away.
We get within about 3 light-minutes of Mars at its closest approach.
https://en.wikipedia.org/wiki/List_of_nearest_stars
Alpha Centauri, our closest neighboring star system, is about 4.2 light-years away.
So traveling to planets in other solar systems isn’t something that’s probably going to happen in the immediate future. Even if one of these possibilities ultimately does turn out to be habitable, it’s not within our near-term reach. We can see, but we cannot easily touch.
We can create a habitable base on the Moon or Mars. But it’d only be habitable conditions inside the base itself.
Terraforming Mars or Venus might be possible.
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