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#1 Re: Terraformation » List of problems for colonization - of planets/moons in solar system » 2004-06-08 07:35:47

Basically, this topic is to point out all the problems for each planet or moon that would possibly feature human colony buildings, outposts or labs, etc.

Like for example

Mars

- very high pressure problems(very low pressure)
- radiation problems
- temperature problems(cold temperatures)
- gravity?


Titan

- very high temperature problems(extreme cold)
- gravity?


and so forth...

basically probably looking here at Mercury, Moon, Mars(and it's moons?), Callisto, Ganymede, Titan(and other Saturnian moons), moons of Uranus or Neptune, etc, etc

Could make for interesting topic.

#2 Re: Terraformation » Should we colonize Europa and Ganamedie! - Nice place to live » 2004-06-08 07:32:04

I'm curious, what is the pressure on the moon Callisto? I'm not looking at humans on Europa, since that would be asking too much, at least in the far forseeable future because of the amount of radiation it gets.

So far it seems that if we were try to get humans on Callisto, problems would be

- temperature
- slight radiation problems?
- pressure?
- other?

#3 Re: Terraformation » Terraforming Titan - Fate of Methane Atmosphere? » 2004-06-08 07:28:30

I agree with karov.

I mean, take away the distance problems and compare both Mars and Titan side-by-side, I think it would be quite a bit easier to get humans down on Titan than on Mars. Mars has the severe problems with pressure and radiation(seemingly), where as with Titan, yes, it's incredibly cold, no doubt, but you don't have the pressure or radiation problems(i'm under the impression there is no radiation problem on Titan). So as karov mentioned, the buildings don't need to be pressurized and *sealed off* like those on Mars would be, and they could be heated inside with appropriate temperature regulators and likewise kept cool in labs.

The thing is, I'm not sure what kind of suit would be needed to keep the human body warm in such horribly cold temperatures like around -180 degrees C. I don't know if we have that kind of suit technology yet.

#4 Re: Unmanned probes » Huygens Probe to Titan » 2004-03-22 22:22:18

I personally can't wait for the first images of Titan - of what lies behind that thick atmosphere that has been stopping us from seeing what lies beneath.

The funny thing with Titan is, just say we had technology that could get us to Titan(or the entire Saturnian system) in a manner of 6 months or less and we could accomplish manned missions, the biggest set-back on Titan(provided there is a decent amount of solid, stable surface) to stop man from walking around would be the ultra-cool temperature, and atmosphere of course. Pressure, apparently isn't a big issue on Titan and I don't believe gravity is something that would make things impossible for us, it's just the temperature that is the killer, but if some kind of advanced padded space-suit were created, this could possibly be fixed. I guess at one point it could be possible to build bases on that moon too, which could be used to study the entire Saturnian system in fantastic detail.

Anyway, after the Huygens probe(providing it is a success), we'll have a greater picture of what we know of Titan and what we can and can't do for the future.

#5 Re: Unmanned probes » Any Plans For Neptune and Uranus? » 2004-02-04 18:28:14

Despite the fact that the planets Uranus and Neptune seem to be less popular than most of the other planets in our Solar System, I think they are quite fascinating. They are gas giants, but I think there are surely some moons around them that could be quite interesting to study or even explore.

The biggest thing happening in the outer solar system in recent times will be the Cassini-Huygens project. With the Cassini studying the Saturnian system and the Huygens probe going down to Saturn's moon Titan.

#6 Re: Unmanned probes » Huygens Probe to Titan » 2004-02-04 18:23:26

Europa is a very interesting moon indeed. The problem with it is the amount of radiation there, but it IS possible for some kind of aquatic life to live in it's oceans(ie, alien fish or microbes) - it's not impossible, put it that way.

Back on topic, Titan is a total mystery, it's surface has never, ever been seen or explored for that fact. Some scientists seem to believe there is land there, but also vast oceans of liquid methane. The surface is extremely cold -178 degrees.

In terms of getting humans on there, it should be possible within this century I believe - very possible. The good thing is that the surface pressure is 1.5 bars or so, which is the equivalent of a 10ft deep swimming pool(about 3.05 meters), so pressure won't be a problem unlike Mars, the gravity of it, I'm not 100 percent sure what it is there, but the biggest problem seems to be the cold without a doubt and the travelling distance on current technology(it's way too long at the moment). But hey, at least it's not too hot, since it's harder to battle extreme heat temperatures(ie, Venus for instance).

I can't wait for the Huygens Probe to decent through Titan's thick atmosphere and send back photos of what lies beneath, it could possibly end up being one of the most interesting discovers within our solar system yet.

#7 Re: Unmanned probes » Spirit & Opportunity 2 - Continued from original thread » 2004-01-25 05:46:11

It'll be interesting once the rover makes it's way up and past that horizon, it seems as though it's on a slope at the moment.

#8 Re: Unmanned probes » Which Mars site has you more interested? - Gusev Crater or Meridiani Planum » 2004-01-25 05:32:40

Yes, I agree, well, we do need a change of scenery. smile

But, Meridiani Planum is the most unique yet though.

#9 Re: Unmanned probes » Which Mars site has you more interested? - Gusev Crater or Meridiani Planum » 2004-01-25 05:24:50

Yes, the soil in Meridiani Planum does look more like that from a riverbed, or soil close to and around a river. Gusev crater has a more baron and dry look about it. Load up both color images of Gusev and Meridiani, and the ground looks alot different, in my opinion.

Smart move to put a second rover in a completely different location.

#10 Re: Unmanned probes » Spirit & Opportunity 2 - Continued from original thread » 2004-01-25 05:20:49

I'm no pro with geology and science, but your explanation does make sense to me. Heck, Mars Express, from what I've read(unless I miss-read something), found alot of water ice in the Southern Polar region of Mars, the water ice is perhaps beneath the surface of the entire planet? I don't know.

#11 Re: Unmanned probes » Which Mars site has you more interested? - Gusev Crater or Meridiani Planum » 2004-01-25 05:17:32

Well, hopefully Spirit will be back on track 100 percent in the near future and continue with it's experiments and things go smoothly with Opportunity, we will be experiencing alot with BOTH sites.:)

#12 Re: Unmanned probes » Spirit & Opportunity 2 - Continued from original thread » 2004-01-25 05:11:40

I opened up a similiar photo of Gusev crater and damn, that soil is COMPLETELY different, well, it looks so, quite amazing. I can't wait for a full 360 degree PAN CAM.

#13 Re: Unmanned probes » Which Mars site has you more interested? - Gusev Crater or Meridiani Planum » 2004-01-25 05:00:40

Both sites are interesting in their own respects, but which one do you find more fascinating, whether it'd be from a scientific or geological perspective? Also, which one do you find overall more attractive looking?

#14 Re: Unmanned probes » Spirit & Opportunity 2 - Continued from original thread » 2004-01-25 04:49:26

Yes, very nice briefing. They suprised Steve(and all of us) with a color image, so soon given how it took longer before we got ones from Spirit. It's a very interesting site and I think there'll be lots of fun there with Opportunity, but I do agree they should take it slower and easy with Opportunity until they nail down exactly what happened with Spirit so the same error doesn't occur again.

#15 Re: Unmanned probes » Spirit & Opportunity 2 - Continued from original thread » 2004-01-25 03:56:30

Oh ok, also, the next briefing is 2:00AM PST, what time is it currently in PST? or, how long to go before that briefing? It's one I don't want to miss, it should be very interesting to see what they say about the images.

#17 Re: Unmanned probes » Spirit & Opportunity 2 - Continued from original thread » 2004-01-25 02:39:58

Looks like things look very good for Opportunity at the moment, great stuff. Hopefully it'll be able to unfold itself succesfully and roll off the lander and begin exploration. It'll be interesting to see what photos it beams back because apparently Medriani Platnum looks quite different to Gusev Crater.

#18 Re: Unmanned probes » Spirit & Opportunity 2 - Continued from original thread » 2004-01-24 20:35:06

How much time exactly is there left before opportunity lands from now. I don't quite understand the PST and UTC times.

#19 Re: Science, Technology, and Astronomy » New Discoveries *2* - ...Extraplanetary, deep space, CONTINUED » 2004-01-09 22:11:33

That is a simply gargantuan star/sun in size. Just shows you the kind of things that are out there. It's a blue on too! I wonder what other colors there are. It's like something a little bit out of that movie Pitch Black with the blue sun.

#20 Re: Unmanned probes » Huygens Probe to Titan » 2004-01-08 22:50:47

If they are to find something interesting there, or something that requires more study via another, more advanced probe, there's no doubt they'll send one, but really, it's one hell of a treck. Sending something to Mars pales in comparisson to sending something to Titan, it's just that much further.

#21 Re: Human missions » Total Recall Mars scenario a reality? - Domes and colonies on Mars » 2004-01-07 07:45:28

Apparently, in the movie, if I'm not mistaken, the deformations as seen on the Human Mars citizens was due to cheaper domes and extended periods of exposure to radiation due to the cheaper domes, something like that.

With the domes, they had windows where you could browse to see the surface of Mars, the expansive deserts and rooms and facilities built into mountains. The windows must've been a very thick, i'm not sure what they would be made of, but they also had emergency shutters that close if the were smashed.

#22 Re: Unmanned probes » Spirit & Opportunity » 2004-01-07 06:49:03

Just curious, what happens after the 90 days of operations, they cease to function or await further instructions/commands?

#23 Re: Human missions » Total Recall Mars scenario a reality? - Domes and colonies on Mars » 2004-01-06 21:35:32

You know, watching the movie with Arnold Schwarzenegger Total Recall and how on Mars it's been seemingly terraformed to some extent, has a rail system, colonies and domes across certain parts of the planet, it all seemed so far-fetched at the time of the movies release(1989 I believe), but now 15 years later or so, it doesn't seem quite so far-fetched. Personally, I see a scenario much like this beginning to happen or at least in it's early stages within the next 50 years or so, except it won't be quite so developed and will only house scientists and terraformers and the like - and perhaps incredibly wealthy people might be able to go there for a designated period of time for a price. Your thoughts?

#24 Re: Not So Free Chat » Watch the time on Mars and more! - with this java program » 2004-01-05 02:59:01

http://www.giss.nasa.gov/tools/mars24/download.html


Download this piece of software which shows you the time and lighting conditions on Mars, it's quite cool.

#25 Re: Unmanned probes » Spirit & Opportunity » 2004-01-05 02:57:30

This is really fantastic news! Congrats to NASA for such a fine landing with the Spirit Rover. Hopefully the landing of Opportunity will go just as well if not better(if such a thing is possible!). Will be an exciting year for Mars!

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