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Why is Venus hell and Earth an Eden?

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Re: Why is Venus hell and Earth an Eden?

#11

Post by kulahan »

chasil wrote: post #8

Venus does not have a molten core, and there is no magnetic field protecting the atmosphere from the solar winds. This is not likely the sole reason, but it must be a factor. Mercury does have a magnetic field, Mars does not.

Mars, interestingly, was just determined to have a core almost identical to Earth’s as I understand it. This is not the sole determinant of course - you still need enough volatiles, enough gravity to maintain a hold on the lightest elements across billions of years, and tectonics to keep refreshing the atmosphere. Unfortunately for us all, Mars has none of those. There may be other significant factors as well.

Re: Why is Venus hell and Earth an Eden?

#12

Post by kulahan »

pfdietz wrote: post #9
chasil wrote: post #8

Venus does not have a molten core, and there is no magnetic field protecting the atmosphere from the solar winds. This is not likely the sole reason, but it must be a factor. Mercury does have a magnetic field, Mars does not.

Venus is thought to have a (at least partially) molten core. It doesn't have a magnetic field, but that could be due to the slow rotation.

Could be for a million reasons honestly. Could’ve cooled too quickly or too slowly as well.

Re: Why is Venus hell and Earth an Eden?

#13

Post by kulahan »

orionblastar wrote: post #7
Mistletoe wrote: post #5

Earlier quoted context omitted.

That’s part of it but the dense CO2 atmosphere is the major issue. Don’t worry, we are trying to get there as fast as we can to Hell as well.

Don't forget the corrusive atmosphere that is acid and eats up space probes.

Depends on elevation. It’s quite habitable with enough height.

Re: Why is Venus hell and Earth an Eden?

#14

Post by taneq »

pfdietz wrote: post #2

And once the water was in Venus' atmosphere, it could reach high altitude, where it would be dissociated by solar radiation. The hydrogen could then escape to space. The signature of this remains in the isotope ratio of deuterium to ordinary hydrogen in the atmosphere there: deuterium enriched by two orders of magnitude above the level seen on Earth.

Ok, so this is all leading to one very specific place: An anarchic society of steampunk airships harvesting Deuterium from the shirtsleeve zone in Venus’ upper atmosphere.

Re: Why is Venus hell and Earth an Eden?

#18

Post by westmeal »

taneq wrote: post #14
pfdietz wrote: post #2

And once the water was in Venus' atmosphere, it could reach high altitude, where it would be dissociated by solar radiation. The hydrogen could then escape to space. The signature of this remains in the isotope ratio of deuterium to ordinary hydrogen in the atmosphere there: deuterium enriched by two orders of magnitude above the level seen on Earth.

Ok, so this is all leading to one very specific place: An anarchic society of steampunk airships harvesting Deuterium from the shirtsleeve zone in Venus’ upper atmosphere.

What would they want with it?

Re: Why is Venus hell and Earth an Eden?

#19

Post by riazrizvi »

chasil wrote: post #8

Venus does not have a molten core, and there is no magnetic field protecting the atmosphere from the solar winds. This is not likely the sole reason, but it must be a factor. Mercury does have a magnetic field, Mars does not.

First order the explanation is simply, Venus is a hellhole because of atmospheric greenhouse effect exacerbated by proximity to the sun.

Re: Why is Venus hell and Earth an Eden?

#20

Post by est31 »

westmeal wrote: post #18
taneq wrote: post #14

Earlier quoted context omitted.

Ok, so this is all leading to one very specific place: An anarchic society of steampunk airships harvesting Deuterium from the shirtsleeve zone in Venus’ upper atmosphere.

What would they want with it?

Deuterium might be the oil of the future as one can do fusion with it easily (in comparison).
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