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Post by RiftandRend on Mar 21, 2017 21:38:57 GMT
Venus seems like one of the most secure planets in the solar system. Subterranean bases would be practically immune from orbital attack, protected by the thick, opaque atmosphere. Any missile used to attack the surface would have to be specialized for the high pressures (9.2 Mpa, 92x Earth levels) and corrosive environment, increasing its cost massively and making barrages less practical.
All told, Venus may be the only body in the solar system where surface invasions are more viable than orbital attack, and even then it would be extremely difficult.
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Post by Enderminion on Mar 21, 2017 22:10:35 GMT
a multi-ton rod of tungsten with ceramic heat shields to punch through the atmosphere will still smack into the ground at a few km/s, this of course is just the rods from gods idea again
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Post by Durandal on Mar 21, 2017 22:19:50 GMT
I think Earth's oceans would have potetnial. Even after the Cataclysm I don't believe that Earth is described much worse than Venus.
Ballistic missile submarines and oceanic cities at sufficient depths would be quiet secure I'd think.
*edit*
Why wouldn't Earth still have a population anyway? Wouldn't there be a massive market for resource, technological, and cultural salvage operations?
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Post by teeth on Mar 21, 2017 22:48:24 GMT
Do they ever give specific temperatures and atmospheric pressures for Earth after the Cataclysm?
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Post by deltav on Mar 21, 2017 22:58:21 GMT
Do they ever give specific temperatures and atmospheric pressures for Earth after the Cataclysm? Oops I lost my papers. Has anyone seen them? Seriously though, it makes sense someone would have stayed behind or gone back.   |
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Post by thorneel on Mar 21, 2017 23:39:53 GMT
The entry describes Earth oceans as having entirely evaporated, but it was said before that it should take centuries longer for them to evaporate (assuming that the runaway greenhouse effect would have started in the first place) so submarines could make sense. Scavenging may or may not make sense depending on varied assumptions, but archaeology probably would, particularly as there would be limited time before everything disappears.
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Post by Durandal on Mar 22, 2017 0:06:56 GMT
I would think Archeology would be a major reason to go back. Recovery of religious, cultural, or political artifacts. For example say that the (presumably secularly Islamic) RFP wants to recover the Relics of Muhammad for cultural or propaganda reasons. There's a mission to return to Earth. Or say that a wealthy Liberty Exchange exec has a lead on the original Mona Lisa and wants to send an expedition to the bunker where he thinks it may be kept.
*edit*
Sorry for going off topic. Yes, I would think that a thick atmosphere would help to fortify a planet.
How does Titan stack up atmosphere-wise?
And while we're talking about submarines, what about submerged cities on Europa?
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Post by The Astronomer on Mar 22, 2017 2:13:31 GMT
When Venus became a runaway greenhouse planet, its original surface melt away due to immense heat created by immense amount of greenhouse gas (water vapor/carbon dioxide). CDE!Earth would likely follow this, and is now likely even hotter than today Venus.
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Post by RiftandRend on Mar 22, 2017 2:24:01 GMT
a multi-ton rod of tungsten with ceramic heat shields to punch through the atmosphere will still smack into the ground at a few km/s, this of course is just the rods from gods idea again The Venusian atmosphere is so thick that the projectiles would rapidly slow, requiring massive shells that would be easy targets for ground based nuclear interceptors. |
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Post by Enderminion on Mar 22, 2017 2:42:40 GMT
a multi-ton rod of tungsten with ceramic heat shields to punch through the atmosphere will still smack into the ground at a few km/s, this of course is just the rods from gods idea again The Venusian atmosphere is so thick that the projectiles would rapidly slow, requiring massive shells that would be easy targets for ground based nuclear interceptors. fine, small armoured nuclear warheads designed to live long enough to hit mach-stem height |
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Aron0621
New Member
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Post by Aron0621 on Mar 22, 2017 4:32:05 GMT
That's assuming that you can build anything useful and have enough lifespan(enough to send warships rater than just wait till the planet cooks it to rubbles) on Venus - which I'm not sure about. We're talking about the planet that is so hot that any probe that lands on it have lifetime is measured in minutes to hours.
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Post by The Astronomer on Mar 22, 2017 4:52:11 GMT
The Venusian atmosphere is so thick that the projectiles would rapidly slow, requiring massive shells that would be easy targets for ground based nuclear interceptors. fine, small armoured nuclear warheads designed to live long enough to hit mach-stem height Try dropping your stick in water at 1 km/s and see how it goes. |
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Post by RiftandRend on Mar 22, 2017 7:39:19 GMT
I would think Archeology would be a major reason to go back. Recovery of religious, cultural, or political artifacts. For example say that the (presumably secularly Islamic) RFP wants to recover the Relics of Muhammad for cultural or propaganda reasons. There's a mission to return to Earth. Or say that a wealthy Liberty Exchange exec has a lead on the original Mona Lisa and wants to send an expedition to the bunker where he thinks it may be kept. *edit* Sorry for going off topic. Yes, I would think that a thick atmosphere would help to fortify a planet. How does Titan stack up atmosphere-wise? And while we're talking about submarines, what about submerged cities on Europa? Titans atmosphere is thicker and higher pressure than earth's and should provide substantial defensive benefits though not nearly as well as Venus's. Submarines would be possible on Europa but the ice crust would prevent them from attacking orbiting craft. On Titan the exposed oceans would allow missile subs to attack spacecraft while being difficult to destroy. |
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Post by dragonkid11 on Mar 22, 2017 9:23:04 GMT
I'm not sure building submarine in Titan's ocean would be a good idea because Titan's ocean is made out of PETROL FUEL.
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ndeo
Junior Member
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Post by ndeo on Mar 22, 2017 9:48:49 GMT
I'm not sure building submarine in Titan's ocean would be a good idea because Titan's ocean is made out of PETROL FUEL. Unless your submarine has leaks, it should be safe considering there's no oxygen for the hydrocarbons to combust. A feature not a bug considering its free fuel! And that means longer operating times for the missile subs and cheaper missiles |
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