If the earth becomes uninhabitable , what other planets can sustain life that aren't out of reach?
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answers:
Athena say: None.
Sorry.
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Zheia say: Altaire IV, Zira, Tralfamadore, Danavesh.
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Second Coming say: Mars, but the time, energy, money and other resources needed to make it habitable would be better spent here on Earth, which is in many times better condition and materials for environmental repair than any reachable planet.
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roberto say: mars seems the go to place for making it habitable,,,,,,, again,as we think it was a billion years ago,a sped up process would need a huuuge vast store of gases to make a trap for sunlight ultraviolet and infrared heat, warming up the planet to free frozen underground H20,methane,hydrogen to make lightning made by huge posts of sunpowered posts on the ground of positive & negative,& water /rain as a combustion product increasing its gravity,toward retaining the atmosphere might call for a huge store or iron nickel flow injected into the core .Another yuuuuuuge job.
this job of millions of years thereby shortened to a hundred years
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JosephV say: I second @Nyx: "There is no Planet 'B'".
Earth not anymore presents choice fruits and foods to man as in Paradise, but it's not uninhabitable. Man-made worlds provide shelter, food and abilities for most creatures to survive comfortably. We have complex tower cities with roads passing through the buildings, scientific farms that produce foods, and garments to keep us safe in varying environments. Measures to counter global warming, climate change, seawater pollution, etc. are already being implemented.
In the event of a comet collision (Apocalypse), large single-roof (spanning 100 meters across) accommodations for the elite ensure heat generated by the body provides warmth, while lighting, air and food are provided. This principle for survival would apply for any large community on Earth.
No Planet 'B'.
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goring say: why are there so many planets an none resemble the earth is a good question
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nineteenthly say: The best bet is probably the upper atmosphere of Venus.
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Ronald 7 say: Mars, if it could be Terraforned is the perfect candidate
A long way off, it would take thousands of years, but worth it
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ob1knob say: if the Earth becomes uninhabitable for whatever reason, re-terraforming Earth would be much easier than terraforming Mars, Venus, Europa or whatever from scratch.
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Jeffrey K say: There are none. So we better take care of this planet.
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Valerie say: Better we take care of our planet, there might be some unavoidable things like seasons are happening because of the sun, so if there is any change in temperature in sun it might affect the planets near to it. So in those cases, nothing can be done. I am sure if that gonna happen then NASA or ISRO might find planets where the human body can sustain.
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Sanjay say: We don't know yet ...
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Fred say: Sorry Buck Rodgers, there may be perfectly habitable planets in outer space... but the transit to those planets is seriously lethal because of background cosmic radiation. It is like a torso CAT scan every third day. Also transit to just the nearest Sun would take some three human generations.
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Bill-M say: None in this solar system will support human life.
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say: NONE
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Poseidon say: No planets, or moons have yet been discovered that is able to sustain human life and one is unlikely to be found for 100s, 1000s or millions of years, if one is indeed found.
Even if one was found tomorrow it would take 100s or 1000s of years to develop the technology to get there.
By that time it may be too late for we humans.
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quantumclaustrophobe say: So far, none that we're aware of...
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jehen say: None that we know of. It may be possible to create a habitable bubble on Mars, but not likely. If humans still exist when the Earth is no longer habitable then I imagine the most likely answer is a space based habitat with a some comets and asteroids in tow for water and resources.
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Nyx say: There is no Planet 'B'.
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Squidmaster say: The closest we have is the moon Europa. Nothing else is within our feasible reach at the moment, and even that would not be able to support life without either setting up life support inside building and not going out, and putting in place a terraforming program (which would take centuries to complete).
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Fabio _ say: It would really be best to make this planet work. There is no plan B, we are stuck with this planet. A lot of people are saying Mars can be terraformed... Really? Those same people are saying this planet is becoming uninhabitable because CO2 has reached 2% or something, How do they plan to make a planet with NO AIR inhabitable when they can't fix a small problem on this one?
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someg say: Nibiru.
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Zardoz say: None. If Earth becomes "uninhabitable" it will still be, by far, the most inhabitable planet we know of.
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Billy say: Mars is the only planet within reach that has any potentiality for colonization. It would require building biospheres, i.e., domes that would hold in oxygen and some heat. Since the sand of Mars is basically rust flakes, iron-oxide, oxygen to fill the domes could be mined from Mars' surface by heating the sand to release the oxygen trapped in it, thus creating the necessary atmosphere to fill the domes. There's enough oxygen on Mars to create a planetary atmosphere, but Mars' gravity isn't strong enough to sustain that atmosphere because of the strength of the solar wind. The solar wind would blow the atmosphere away. That's domes would be necessary, something to hold the oxygen in.
Mars having days and nights of durations not unlike how Earth does is critical because all existing life has evolved in such a cycling day-night environment. It would never work on the moon, for example, because the day-night cycle is far too long to imitate Earth. The night period is so long that any plant life would die before it became light again. On the Moon, you'd have days 14-days long and nights 14-days long, so every time it became night, all plant life that might've grown during the daylight would die before it became daylight again.
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Lone Cat say: So far we haven't been able to leave the solar system. It would take generations to get to another solar system. And none of the planets in our solar system will support life.
In theory we can live on mars. But we'd have to live indoors.
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RickyRoo88 say: It would take so long to get to them that we’d all be dead anyway.
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