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/sci/ - Science & Math


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8943992 No.8943992 [Reply] [Original]

if venus still had an internally generated magnetic field and it was as strong as earth's, would the planet resemble earth today?

>> No.8944147

It would depend on how strong the magnetic field was and what you consider "resemble" to mean. Technically, it "resembles" earth more than any of those other planets or moons in your image: it has atmosphere and liquid on the surface.

>> No.8944245

>>8944147
Venus doesn't have any liquid on its surface you fucking retard, it's over 400 degrees celsius.

>> No.8944247

>>8943992
No, it is too close to the Sun, with or without a magnetic field it would eventually have heated up enough that any liquid water would be vaporized and a runaway greenhouse effect would start up. Magnetic fields are only good for slowing down atmospheric erosion.

>> No.8944262

>>8944247
I think you're wrong.
If earth was moved into venus orbit global temp would rise only by about 30F, which is catastrophic yes, but it wouldn't evaporate the oceans.

>>8944147
nothing you said is correct.
titan is the only other object in this system that has stable bodies of surface liquid

>> No.8944278

>if there was some pseudoscience forcefield around a planet made of sulfuric acid with intense volcanic activity would humans be able to live there?
t. brainlet

>> No.8944527

>>8943992
The real problem wasn't the lack of a magnetic field but the lack of tectonic activity, which is crucial on Earth to avoid building up CO2 in the atmosphere.
You also have to consider that initially the sun was colder than what it is today, according to some models (yet unverified) it's possible that venus remained habitable for as much as 2 billion years before giving up to the runaway greenhouse effect.

>> No.8944534

No.
>Different material composition.
>Too close to the sun (at least closer than Earth is).

I imagine it could look somewhat like Mars without the ice caps with pools of green and yellow acids that streak across the surface following valleys made by the winds and with a beautiful atmosphere.
I almost want to see what the Venus I just described would look like. Probs hella far off, but I think I'm in love with the imaginary concept.

>> No.8945603

so far nobody has given any useful information. it's all just personal opinions based on that one discovery channel documentary about the planets
you watched 15 years ago.

>> No.8945633
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8945633

Nobody has mentioned the fact venus rotates super slow and is the main reason why it lost its magnetic field.
If you want convection, the planet has to be spinning fast enough to start with.

>> No.8945635

>>8944245
Are their not chemicals that exist in liquid form at that temperature?

>> No.8945693

If Venus had an atmosphere of nitrogen instead of carbon dioxide it would be similar to a very dry Earth.

>> No.8946246
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8946246

It's a shame venus is such a shithole. If it's history had been more fortuitous imagine what we could be doing right now. Half of our race would probably live there.

>> No.8946250

>>8944245
Lakes of liquid lead senpai

>> No.8946265

It would be even worse.

Venus' crust is incredibly thin and volcanoes erupt non stop. If solar wind and cosmic radiation couldn't blow away lighter gases. then the pressures and temperatures would be even greater. not to mention the horrible hydrogen compounds that could be present.

>> No.8946271

>>8946246
you would be bowing before giant green venusian women

>> No.8946283
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8946283

Maybe far in the future humanity will somehow alter the orbit of mercury and smash it into venus at an angle, restarting the world and giving it a moon

>> No.8946299

>>8946283
how much energy would be needed to do that

>> No.8946307

>>8946299
If we ever manage to become a type 2 civilization and build a dyson sphere I imagine its something we could do

>> No.8946313

>>8944278
>pseudoscience forcefield
"Its magnitude at the Earth's surface ranges from 25 to 65 microteslas (0.25 to 0.65 gauss). "

>> No.8946314

>>8946299
depends how long you want to wait

>> No.8946333

>>8946299
some
too much
more than you can afford

>> No.8946508

>>8945603
I wonder where all those exoplanetogists went.
They must be too busy at nasa.

>> No.8946586
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8946586

>>8946307
Yeah if we can build a fucking sphere around our star I think moving a small planet would be no problem

>> No.8946627

>>8946586
Dyson spheres are literally the biggest waste of resources. If a civilisation can build a massive fucking sphere around the entire sun they sure as hell can build something more efficient (not to mention portable) like a fusion reactor or a black hole generator

>> No.8946637

>>8946627
but muh kardashev scale

>> No.8946648

>>8946627
Fusion is a meme. The only useful energy sources are renewables like solar wind and bio fuels.

>> No.8946663

>>8946648
funny thing is that solar energy comes from fusion

>> No.8946665

>>8946637
I've never really thought the kardashev scale was very credible. To reach type 1 you have to access all the energy of a planet. Every single gust of wind must be harnessed. The kardashev scale is just not economically efficient. It also violated thermodynamics by assuming we can harness all the energy of a planet.
>>8946648
>The only useful energy source are renewable like solar, wind and bio fuels
>FUSION IS A MEME
Implying that's going to help a civilisation explore space. Can you imagine an interstellar spaceship powered by fucking wind? Or the colonisation ship of Mars stopping half way for fucking bio-fuel. Nuclear energy is the energy of the future, renewable are literally just byproducts of Nuclear processes and the sign of a stagnating, earth-bound civilisation.