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/sci/ - Science & Math

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5949929 No.5949929 [Reply] [Original]

No but seriously, would something like this be possible in the distant future?

>> No.5949949

magnetic fields are supposedly a reason why the sun has not destroyed our atmosphere. It has to do with materials and density of the planet. But if we can actually move a whole fucking planet, simulating atmosphere and magnetic fields sounds like a cake walk

>> No.5949953

>>5949949
to actually answer your direct question. It's easier then you think. You could do it with a very large asteroid. The mass would slowly change its orbit. I dont know if the calculations are possible.

>> No.5949960

Too bad mars doesn't have magnetic field anymore.
Venus could work though. Just gotta wait for the winds to slow down and for the atmosphere to cool. That could take a while though because of that whole greenhouse thing.

>> No.5949967

>>5949953
>easier than you think
>don't know if the calculations are possible
then why are you saying it's easier if you don't know.

>> No.5949976

>>5949967
I mean currently. I should have said: With the information about the planets we have now and the computer power we have, I do not know if we currently can calculate for the mass and distances required to move a planet with another high mass object. However from an engineering standpoint we are maybe 15-30 years away.

>> No.5949985

>>5949953
that would take a huge nubmer of years, and you'd still have to find the energy to keep the asteroid from falling into venus.

>>5949929
If you are able to move mars and venus (spoiler: you won't be able to for many tens of thousands of years, or ever, whichever uses less energy), then you can keep them in eachother's lagrange points.

this is a dangerous game, though, because it wouldn't take long for the other planets and small changes in the gravity field to knock one planet out of a lagrange point. The result would be a collision.

with only a single planet left, there would be no stable orbits, and either a collision would occur, or one planet will get flung out into space and the other closer (into) the sun.

>> No.5949993

Distant meaning 500,000 years from now, maybe. Any sooner is just literally impossible. We'll have mastered intergalatic travel long before we can move planet sized objects willy nilly. Moving mars into us might occur a lot sooner now that I think about it. Moving Venus up is a no though.

>> No.5950024

Forgetting how it will affect the gravity well for starters. (even without the simple "let's make everything equidistant" scenario)

If say, we did the slow down method to drop from one planet to the next, would we survive the trip, being outside each planet's safety net?

Heat is the least of your worries.

Less distant future, imho. Simplify things and build a system that can speed up/slow down the planet rotation so that we can push it to where we want it to easier, and use the rotation to help move it along. (if we are still using the push-method of space travel still.)

>> No.5950026

>>5949929
Why not do it with mercury as well OP? It has almost as much surface gravity as mars, would make a pretty little habitable moon for venus as well.

>> No.5950030

Why don't we just replace the sun with jupiter?

>> No.5950073

>>5949929
You've got a misunderstanding of what the habitable zone is. A planet does not become habitable just because it is in the habitable zone. Our moon for example is in the habitable zone.

The habitable zone is where a planet very very similar to Earth can support life. It's where water can be liquid if the planet has a similar atmosphere and other features like that of the Earth.

Venus has such a think atmosphere insulating it that it's too hot for liquid water even if moved out to Earth's orbit. Mars could support liquid water if we warmed it up by moving it closer to the sun, but it's hard for it to build up an atmosphere with no magnetosphere.

>> No.5950080

Why not just build a Dyson ring and inhabit that?

>> No.5950089

If we could split carbons into hydrogens fixing Venus' atmosphere wouldn't be a problem.

>> No.5950091

If we could move venus, it would be fairly easy to manipulate its atmosphere in comparison.

>> No.5950092

>>5950089
easier to just sequester the carbon somehow. Maybe create an extremophile cyanobacteria.

>> No.5950102

The energy required would be immense. Moving planetoids on timescales longer than decades is difficult work, especially when you want a specific orbit.

Also the mineral composition and size of Venus may present issues, but that's guessing.

>> No.5950105

>implying Venus isn't a tropical jungle with dinosaurs already
Why move it? You're going to destroy a perfectly fine eco-system.

>> No.5950107

Why not moving Europa into the orbit of Earth?

>> No.5950110

>>5950107
Because we've got enough problems with what Europe we have already.

>> No.5950121

>>5949929

They're BOTH INSIDE THE HABITABLE ZONE ALREADY

GET TO WORK, NASA/ESA/WHATEVER, WE NEED TO TERRAFORM!

>> No.5950174

>>5949976
>I do not know if we currently can calculate for the mass and distances required to move a planet with another high mass object.

Yeah big numbers are tricky. My calculator only has 9 digits.

>> No.5950175

>>5950174
Have you tried gluing a second calculator on its side?

>> No.5950178

>>5949929
>No but seriously, would something like this be possible in the distant future?
not really.
orbital systems with more than two members are not stable unless there is a pretty big order of magnitude of difference in mass of the bodies. I don't recall the formulas but they're out there.

This is why saturn can have a bunch of moons--only because compared to saturn, the individual moons are very tiny. the moons are closer to each other than they are to saturn, but the planet they are orbiting is so much vastly larger that the main gravitational influence is still saturn.

-------

earth and the moon are in the opposite direction: compared to other examples in our solar system, the earth's moon is huge compared to the planet it orbits.

>> No.5951214

>>5950121
No see they already pushed them there.

*Note: a real demonstration would not require astronauts to push the planet themselves

>> No.5951221

>>5950030
Well what are we gonna do with the sun?

>> No.5951235

>>5951221
Make it King of France.