Terra-forming Venus vs Mars

"To the comments about short comings of Venus that my opponent mentioned, I'll be waiting until R4 to address them. Do not consider them dropped."Just wanted to emphasize that to the voters1) Lunar issues " The entire asteroid belt is only 3.6e21 [2], about 4% the mass of the moon. At that mass difference, this new moon would have to be less than 19 thousand km from the center of Mars "I admit that the asteroid belt is rather empty compared to the Moon, however there are other planetary bodies that enter our solar system such as comets and other large chunks of rocks that over time could be used to construct a moon for Mars. http://en.wikipedia.org...http://www.sciencedaily.com...Mars already has two moons of decent size though, Phobos and Deimos, and these moons are actually captured asteroids that Mars pulled into planetary orbit all by itself! Moving asteroids under Martian influence becomes a much easier task than moving Mercury when you consider 1) these asteroids are tiny in comparison to Mercury to move, and 2) The distance and work needed to do this is much lower than one would expect since Mars has already pulled asteroids into its own orbithttp://en.wikipedia.org..."this new moon would have to be less than 19 thousand km from the center of Mars... This is very close to the Roche limit [3] of 10,600 km"But its still twice the limit, which is safe enoughCO2I apologize for misreading my own source, allow me to update my own table correctlyMars = 95%Earth = .039%Venus = 96.5%So mars still has less CO2 then Venus, both percentage wise and size wise since Mars is much smaller than Venus to begin with. The Con questions how it would be easier to manipulate the CO2 levels on Mars just because Mars is smaller. Since Mars has 10,000x LESS CO2 than Venus, It would be easier to manipulate because quite simply, there is a far smaller amount of ithttp://zebu.uoregon.edu...(Its about halfway down, it is the second bullet under "Quick Summary" under the page for Mars)So CO2 levels would be easy to manipulate simply because there is a much smaller amount to begin with then Venus. and the same could be said about the Nitrogen levels. WaterMars's Ice caps are only 15% water, and although that certainly wont be able to sustain a civilization like the Pro says that amount of water would be more than enough to help supply the first people who do live on Mars. Venus meanwhile still has far less water than Mars does so any human activity on Venus would have to rely on Water to either come from Earth or be atomically put together..... Whereas on Mars all you have to do is drill in the right place....Making the actual moonThere are a lot of problems to constructing a moon from a bunch of pieces, but there is one thing that I think could enlighten everyone about how possible this is. -> http://lifeboat.com...Go down to number 3, Megascale Engineering. Basically, Mankind may be able to master the skills of building massive structures in specific dimensions using self replication ideals and materials to the point where such engineering could be built around asteroids to enhance the size of it steadily and efficiently to the point where Mars could literally GROW its own moon from a bunch of harvested rocks. Such a thing could be done safely and steadily and not involve nuking a planet over and over, a tactic that might not even work. NitrogenIf we are to add Nitrogen to Mars, then there are two things we can consider, the first is that it is locked in the soil instead of the atmosphere"We hypothesize that Mars soil, as typical of extremely dry desert soils on Earth, is likely to contain at least some of the missing nitrogen as nitrate salts and some fixed ammonium bound to aluminosilicate minerals."http://journals.cambridge.org...The other thing about Nitrogen is that the only real need for Nitrogen is to use it to support ecosystems, therefore the size of the ecosystem we intend to create correlates with how much Nitrogen we would need. We would not need to undertake a massive manipulation of nitrogen to Mars only if we intend to populate Mars as heavily as we populate Earth. So to summarize this point, Nitrogen might be locked in the ground, and the amount of nitrogen needed really depends on the size of the civilization that will inhabit the planet. Other issues" he needs to address the magnetic field issue, since without the protective magnetic field, and the solar wind will blow away (over time) any atmosphere that we try to form"Mars does have a weak Atmosphere, however one has to take into account 2 things,"The authors found that Mars's atmosphere does not drift away at a steady pace; instead, atmospheric escape occurs in bursts."http://www.dailygalaxy.com...The second thing that one needs to take into account is that Mars is losing its atmosphere at a very slow pace, Earth actually loses its atmosphere MORE that Mars!http://dsc.discovery.com...http://abundanthope.net..."what will you do for the core so that you can hold an atmosphere"Here's a curveball for ya, Mars might not need to be modified to hold an atmosphere since it is being considered that early colonization may be located UNDERGROUND!http://www.redcolony.com...http://chapters.marssociety.org...Its plausible that humans could live underground while leave the surface for agriculture since agriculture is possible in the natural sunlight (something Venus certainly doesnt have). Living underground would also protect humans from possible exposure to radiation from the sun too. We dont need to overhaul Mars to have a massive atmosphere similar to Earth, we can make due with what most of Mars already has and still be pretty well off. "Another issue that was never addressed was the temperature. Mars is far too cold for liquid water to exist anywhere on the planet (and of course, the low pressure doesn't help either)"Liquid Water use to flow across the Martian surface much like it did on Earth though, science up to this point has only merely begun to investigate why Mars is as dead as it is now. Right now what I'm getting at is that once more is understood about why Mars, which was in the recent past much more habitable then it is now, more dead, then humanity could potentially come up with a strategy to correct such an issue and transform Mars back into a second Earth...http://www.sciencedaily.com...http://lightyears.blogs.cnn.com...http://www.csmonitor.com...Point is, Mars used to be much like Earth, then it began to die. If We could figure out what happened, it can be assumed that such a process could be reversed on a small enough scale to allow for humans to colonize Mars. ResourcesMy bad, I didnt realize we werent supposed to discuss this, I will focus on the issues. Questions to the ProHow many nukes do you think would it take to move Mercury into orbit with Venus? Once you get Mercury in place how do you slow it down to stay in orbit? wouldnt people get mad knowing there are now just 7 planets? Venus is really really hot how would the temperature be brought down more than 700 degrees to acceptable temperatures? Venus has much less water than mars, how would Venus solve its water problem? Also Venus has such an ungodly high pressure on the surface, which is also partially molten in some areas, where exactly would people live?Ill end here for now, Again i apologize for taking so long