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could also use the poles of mercury as a settlement site. more than enough ice for humans, plenty of solar energy to snag while we hide out in the craters and caves
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Feb 25, 2021 04:17
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mars red and broke venus green and woke
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Feb 25, 2021 04:21
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Oh yeah, I did mean surviving on the surface, not just landing on it. I was going to call it a pressure cooker, but it looks like conditions inside pressure cookers are much milder than conditions on Venus.
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Feb 25, 2021 05:02
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The longest duration a probe has survived on the surface of Venus was about two hours. That was Venera 13. Venera 14 lasted about half that. In a big oops, Venera 14 had a probe arm that was supposed to swing down and sample the soil. The arm did swing down, and instead sampled the probe's jettisoned camera lens cap. Anyway, here's what Venus sounds like. https://www.youtube.com/watch?v=8jZDW53U8qQ
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Feb 25, 2021 05:31
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I would assume there'd be a few centuries of extremophile life converting that carbon dioxide atmosphere into dirt/plant life/etc before humans could ever walk the surface.
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Feb 25, 2021 05:41
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Seriously extremophile because there's hardly any water at all. It's not just that it had water, which then evaporated and is now in the atmosphere, even the atmosphere has basically no water. You'd have to crash a bunch of comets into the thing to even make a difference.
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Feb 25, 2021 05:45
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Why do the probes fail so fast on Venus? Is it just because we haven't developed materials yet that can withstand more than a few hours in the 800 degree acid oven of Venus? Mars must be the easier goal for now.
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Feb 25, 2021 05:46
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Who gives a poo poo about the surface? Nothing is ever going to live on it.
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Feb 25, 2021 05:49
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DropsySufferer posted:Why do the probes fail so fast on Venus? Is it just because we haven't developed materials yet that can withstand more than a few hours in the 800 degree acid oven of Venus? Don't forget 90 atmospheres of pressure.
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Feb 25, 2021 05:55
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Hell yeah, let's smash a bunch of comets into it. Can't the extremophiles live in the atmosphere?
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Feb 25, 2021 06:04
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DropsySufferer posted:Why do the probes fail so fast on Venus? Is it just because we haven't developed materials yet that can withstand more than a few hours in the 800 degree acid oven of Venus? We also haven't really bothered trying in decades
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Feb 25, 2021 06:12
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Venus is covered in a dense and extremely toxic fog which resonates deeply with me on an emotional level.
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Feb 25, 2021 06:18
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Phanatic posted:Don't forget 90 atmospheres of pressure. So you're telling me there isn't going to be a Venus colony for a while  I played surviving Mars recently a fun game where you terraform Mars. Now I'm imaging terraforming Venus would a 100 times harder.How would the greenhouse gasses be dealt with to begin with.
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Feb 25, 2021 10:17
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DropsySufferer posted:So you're telling me there isn't going to be a Venus colony for a while they wouldn’t we would live in cloud cities
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Feb 25, 2021 11:12
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DropsySufferer posted:So you're telling me there isn't going to be a Venus colony for a while Of course europa is where it's really at 
Splicer fucked around with this message at 13:53 on Feb 25, 2021 |
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Feb 25, 2021 13:44
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Fun fact: Venus' surface is relatively young, probably because "catastrophic resurfacing event" happened there, which as far as I remember from some old documentary is like a giant planet-wide volcano, or many many volcanoes across the surface over short period or time https://en.wikipedia.org/wiki/Geodynamics_of_Venus
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Feb 25, 2021 14:16
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DropsySufferer posted:Now I'm imaging terraforming Venus would a 100 times harder.How would the greenhouse gasses be dealt with to begin with. I think it's mostly carbon dioxide. Some kind of moss, or lichen that would breath the atmosphere taking the carbon to make organic compounds and releasing the oxygen might work? It'd take centuries though.
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Feb 25, 2021 14:34
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spacetoaster posted:I think it's mostly carbon dioxide. Some kind of moss, or lichen that would breath the atmosphere taking the carbon to make organic compounds and releasing the oxygen might work? yeah it's like 97% CO2. the big problem with using biologics as i understand it is finding a way to get or make water for them. there's practically none. personally i'm pro going and stealing enceladus and just throwing it at venus
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Feb 25, 2021 15:32
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Mmm enchiladas
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Feb 25, 2021 15:56
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mediaphage posted:yeah it's like 97% CO2. the big problem with using biologics as i understand it is finding a way to get or make water for them. there's practically none. Yeah, we'd have to throw a bunch of ice onto it. I wonder if it would all just evaporate and make a giant cloud over the planet dropping the temperature?
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Feb 25, 2021 16:05
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It's weird how I had no idea we had images of Venus's surface until like five-ish years ago, especially considering it's arguably more exotic and interesting than Mars. I can't help but suspect they got downplayed at the time because of cold war bullshit and eventually forgotten about by the public at large.
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Feb 25, 2021 16:47
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SidneyIsTheKiller posted:It's weird how I had no idea we had images of Venus's surface until like five-ish years ago, especially considering it's arguably more exotic and interesting than Mars. I can't help but suspect they got downplayed at the time because of cold war bullshit and eventually forgotten about by the public at large. Did you know about Titan?
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Feb 25, 2021 16:56
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spacetoaster posted:Yeah, we'd have to throw a bunch of ice onto it. I wonder if it would all just evaporate and make a giant cloud over the planet dropping the temperature? Water vapor is also a greenhouse gas. Adding more gas to Venus's atmosphere is not going to help, you need to get CO2 out. So just get together a few septillion tons of calcium and magnesium and drop it on Venus, and it'll sequester all that CO2 as carbonates.
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Feb 25, 2021 17:23
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Bloody posted:It is scientifically pretty useless too orbhabs now
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Feb 25, 2021 17:33
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Phanatic posted:Water vapor is also a greenhouse gas. So how much should I ask for on kickstarter?
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Feb 25, 2021 17:34
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Phanatic posted:Water vapor is also a greenhouse gas. Asteroid mining is our future jobs program.
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Feb 25, 2021 17:41
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Mars hid all the gross poison poo poo like a beta planet while Venus just rear end blasted our probes with it on the first encounter.
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Feb 25, 2021 17:45
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Colonising Venus seems pointless. Like the only reason we would is time's running out on Earth and - if it's cause of our poo poo we won't have the capacity - if it's a billion years later and us trying to get off earth cause the suns gonna swamp it Venus isn't an option anymore If we're gonna mine it why not just send robots.
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Feb 25, 2021 17:52
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Depends on the time scale. If we can launch an asteroid/comet into venus, and drop engineered organisms on occasion that'll make it more "livable" in a few hundred years it might be worth it in the future to just have another planet we can live on. I don't know what the research will show, but I just think that low gravity places like Mars are going to be too big of a problem to overcome ever. As posted above, we could absolutely build floating cities on Venus right now. The atmosphere is so thick that literal metal structures will float on it.
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Feb 25, 2021 17:58
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My favorite thing about human exploration of Venus, and arguably the solar system, is the Pioneer Venus project, specifically the Multiprobe. Essentially, the Pioneer Venus mission was a two part mission. It consisted of an orbiter and a multiprobe which was "bus" containing 3 small atmospheric probes and 1 large atmospheric probes. A few weeks prior to reaching Venus, the bus released it's large probe and the smaller probes released 4 days later. The orbiter arrived a few days before the probes, having been launched earlier, and entered an elliptical orbit around Venus. They all reached the planet on the same day, Dec 9th, 1978. Each probe was aimed at a different location on the planet. The bus itself was even aimed to enter the atmosphere at a high angle and collect data, essentially acting as a 5th probe until it was destroyed by atmospheric friction. The small probes probes had no parachutes, unlike the large probe, but all 4 had aeroshells designed to protect them during entry. The large probe's aeroshell was designed to detach when the parachute deployed, while the smaller ones would remain on until impact. None were designed to survive the impact as even the large probe was designed to detach the parachute above ground. All 4 probes successfully operated until hitting the ground. However, one of the small probes even survived landing and returned data for an hour on the surface. Likely owing the thick atmosphere slowing the probes down to as low as 1 m/s. So despite never really planning to do so, the US actually successfully landed a probe on Venus and returned data from the surface. Overall it was very successful mission that I never really heard about until I was digging around in old space missions. I like to describe it as shooting a shotgun full of probes at Venus.
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Feb 25, 2021 18:07
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commando in tophat posted:Did you know about Titan? I think I did but then forgot about it. So maybe that's what happened to everyone with Venus, too, haha.
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Feb 26, 2021 07:22
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Way too many educational materials base their depiction of Venus on radar-based geographical images that not only look ugly but give a false impression of what it looks like in orbit.  SidneyIsTheKiller fucked around with this message at 07:43 on Feb 26, 2021 |
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Feb 26, 2021 07:30
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Is there a good reason to go to Venus, apart from cool science things? It seems like it's a huge ball of hot acid vapors that will actively try to murder anything that gets too close. Sure, we could make some cool sky cities, but is there a point to that other than cramming more humans into the solar system? I'm already super skeptical of putting humans on Mars, this just seems like that but worse.
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Feb 26, 2021 08:32
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blastron posted:Is there a good reason to go to Venus, apart from cool science things? It seems like it's a huge ball of hot acid vapors that will actively try to murder anything that gets too close. Sure, we could make some cool sky cities, but is there a point to that other than cramming more humans into the solar system? I'd say that cool science things is the only reason to go anywhere outside of earth. It would be way easier and cheaper to colonize Antarctica or Sahara if you really need to put more humans somewhere
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Feb 26, 2021 10:30
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blastron posted:Is there a good reason to go to Venus, apart from cool science things? It seems like it's a huge ball of hot acid vapors that will actively try to murder anything that gets too close.
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Feb 26, 2021 11:49
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Yeah imo Venus is just full of cool untapped science opportunity. Space colonization is a complete farce for the foreseeable future, beyond like a amundson-scott like moon outpost
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Feb 26, 2021 17:31
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Splicer posted:Of course europa is where it's really at I have it on good authority that we can't land on Europa. Something about it not belonging to us...
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Feb 26, 2021 18:27
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spacetoaster posted:Yeah, we'd have to throw a bunch of ice onto it. I wonder if it would all just evaporate and make a giant cloud over the planet dropping the temperature? Iirc the clouds on Venus are 25% water
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Feb 26, 2021 20:04
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Arglebargle III posted:Iirc the clouds on Venus are 25% water no, i don't think so. venus has like 20ppm water. it's lost all but like a tenth of a percent of any water it had. the clouds are mostly just sulfuric acid.
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Feb 26, 2021 21:06
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Is there any scientific consensus on whether Venus's axial tilt is 2.7° or really 177.3°? Latter seems more likely, given its rotation?
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Feb 26, 2021 23:10
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