M
bdewoody":2a1bcn8o said:I doubt that we will ever get to the point where it would be practical to terraform Venus.
OleNewt":1cyzkask said:Even if we could artificially create an atmosphere, wouldn't it just blow away or drift off?
Couerl":2vf95l5d said:...Well, just finished and in case anyone cares, it doesn't look too promising, but maybe doable someday.. We'd need a 447.8332 km diameter tin foil umbrella approximately 544,662 km sunward for optimal coverage.. :lol:
neilsox":22rv9vyj said:..447 kilometers would about cover Utah not 31 % of Earth's surface. ..
neilsox":32qw1vur said:Some errors occurred. 447 kilometers would not shade very much of Venus = cool the surface perhaps 0.1 degree c, average. Neil
Gravity_Ray":rtunefhk said:But I disagree that Venus would be 'easier' than Mars to teraform due to reasons stated in Menelloms post. The only thing that is harder on Mars is maintaining an atmosphere long term due to not much of a Mars magnetic shielding to protect against solar wind blowing it off. But that can be done with large factories continuously pumping gases into the atmosphere.
moreandless":rtunefhk said:we hear a lot about solar radiation on the surface of mars
does anyone know how the background radioactivity compares to earth?
Shpaget":2vadu669 said:Since we're already shifting the asteroids around, mining them, producing giant umbrellas etc, we can also construct a pipeline between Venus and Mars and pump some of the atmosphere. Two birds with one stone.
The excess can always be dumped in the Jupiter, I'm sure he wouldn't mind.
When we reduce Venus' atmosphere to acceptable levels we can construct giant girders on it's equator and place some self-deploying solar sails that open automatically on the side that is turning away from the Sun and close on the other. That way we can spin up the Venus to decrease the length of the day.
menellom":234crfga said:I'd be interested in hearing some of the data on how quickly Mars would lose its atmosphere if terraforming attempts were made. There's long term and there's long term. If Mars might lose whatever atmosphere we help generate within a couple decades, it's a big for terraforming problem. On the other hand if it'd lose it over the course of a few centuries well... presumably we'll have come up with a solution long before it would become a problem.
menellom":fokyg1go said:The bigger problem looks like it would be radiation. The daily dose of radiation that a hypothetical 'Martian' would experience would be high, and while it could me managed, it'd still wreck havoc. Large blasts of solar radiation like from a flare would especially do a LOT of damage.
Radiation, more than atmosphere or temperature is the biggest hurdle for terraforming Mars.