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Moons create tides which may be necessary to life in the oceans. Tides mix waters, create changing shore conditions which are used as nurseries for creatures, and possibly oxygenating water by forcing it to turn over in bays and inshore environments.
Using solar sails and/or solar concentrators
to slowly move volumes of free-body rock could put it in a stable orbit around a planetary body. A solar sail could over generations guide a rocky body into an orbit around a planet.
By carefully combining the solar wind and concentrating solar light on a body such as a comet, you could create a solar 'rocket' motor with the solar sail, raising it's efficency at the cost of delivering less mass to the moon.
[link]
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Taking generations" to accomplish almost guarentees that a short sighted race like ours will not attempt it, but it sounds like it could work. + |
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Umm, possibly. Small point, but in order to have tides and the benefits of oxygenated shorelines you need water and oxygen as well. Could you use the solar sails to crash-land a few comets? The ice should melt, evaporate, and form an atmosphere. Eventually you might end up with an ocean. |
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Plenty of water there already, in the form of sulphuric acid. |
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Mars already has moons. Venus could use a good-sized one, though. |
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'Free-body rock' I think that in practice you wil most likely end up with a ring of debris orbiting the planet, like Saturn. Still it might look quite nice! |
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Bring ammonia from outer planets to Venus. Reacts with sulphuric acid in atmosphere to produce ammonium sulfate. Water, fertilizer, carbon dioxide... maybe a moon might be worthwhile. |
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Mars, however, is geologically... indolent? Comatose? Dead? Crust is too thick and solid to tidally knead anything worthwhile out of it. Tidal heating gets energy from angular momentum of moon... would require a huge, close moon... maybe several... I think he's dead. |
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[Admin: As a title, "Terraforming" doesn't tell us anything -
please change the title of this idea to something more
descriptive - e.g. "Build a moon for Venus".] |
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And a point I forgot to make in my first annotation: This is not a new idea. |
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Why assemble? What's wrong with Callisto? Or Ganymede? Or Europa? You just need to do a little cosmic billiard balling to get one of the above into the right orbit. Of course...you don't want to scratch. |
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