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  1. - Top - End - #1
    Dwarf in the Playground
     
    PaladinGuy

    Join Date
    Jul 2019

    Default Traveller Solar System

    This is My Spelljammer chart repurposed as a Traveller chart of the Solar System:
    https://www.deviantart.com/thomasbow...0%3A1564257469

    The setting date is 2256 ACE (AD), the middle of the 23rd century. Mars and Venus have been terraformed and have populations in the billions. Earth has a population in tens of billions. If you want a more precise figure as to the population of each planet or asteroid, I've expressed the population digit as a decimal to the thousanth place, this number is an exponent of ten, so ten to that number is the more precise figure on population. the Earth is balkanized like it is today, the major nations are United States of America, Australia, Brazil, Canada, Russia, China, Japan, The United Kingdom, Europe, and India. Mars and Venus have their own seperate governments and count as major powers themselves. the Jump Drive was invented 130 years ago. There is no Imperium, instead each of these main powers have colonies among the stars. The highest tech level in the System is C or (12). Standard Traveller rules apply to this setting. The Moon (Luna) is under the jurisdiction of Earth, it contains a number of colonies by the major Earth powers and they are considered extensions of each of those country's territories under international law. There is a United Nations based in New York City, it serves as a debating forum for the various nations represented here, there is a General Secreatary, but he doesn't have much power. The UN passes resolutions that are often ignored by the member states. Mars and Venus are also members of the United Nations and they have ambassadors and embassies in New York City as well.

  2. - Top - End - #2
    Dwarf in the Playground
     
    PaladinGuy

    Join Date
    Jul 2019

    Default Re: Traveller Solar System

    Oops I meant to place this in World building.

    This is a homebred Traveller setting. The rules set I am using here is Mongoose Traveller, but any version of Traveller could be used. Items tech level 12 or less can be found or bought here. Earth exports tech level 12 items, while most of the other worlds have economies based on resource extraction. Most agriculture occurs off Earth. Food production isn't very manpower intensive, so there are orbital colonies surrounding Earth were food is grown. Food is then sent down to the Earth's surface in exchange for credits.
    Credits are like bitcoin, they don't exist in the real world, only in the virtual world, and in this setting there are many virtual worlds. There are three types of credits, gold, silver, and copper bitcoins. The credit referenced in most Traveller products refers to the gold credit, in virtual worlds where they appear, they look like gold coins, one can customize these coins, but a credit is a credit. A silver credit coin is worth one tenth of a credit and a copper credit coin is worth one hundredth of a credit. There are also kilo credits which look like silver bars and megacredits which look like gold bars in the virtual world.

  3. - Top - End - #3
    Dwarf in the Playground
     
    PaladinGuy

    Join Date
    Jul 2019

    Default Re: Traveller Solar System

    A Traveller credit is worth about $10 US, I believe. Most travel in this setting is interplanetary, that is within the system. Most of humanity lives within the Solar System, and in the Solar System, most people live on Earth. The population of the Earth at this time is 32.2 billion people. This includes people living in orbit around the Earth and people living on the Moon. The Moon doesn't have a government of its own, it consists of territories of various Earth nations, The United States has sovereignty over the Sea of Tranquility for instance, and it has statehood status, There is a settlement called Armstrong, named after the first astronaut to set foot on the Moon, there is the Apollo 11 Museum, a spaceport and a NASA installation there as well. NASA installations count as Scout Bases under Traveller rules.

    NASA has been busy exploring other star systems. The nearest star system outside of Sol is Alpha Centauri, where three Garden planets reside, one around each of the stars in the System. the most Earthlike of those is the planet Aurora, orbitng the brightest star in the system designated as Alpha Centauri A, Alpha Centauri B has the Planet Prometheus which has a dense atmosphere and is slightly smaller than Venus with 0.85g surface gravity, and the largest planet is Minerva, a planet 10,378 miles in diameter (Size A), it has a gravity of 1.3g, a standard breathable atmosphere, and is tidally locked with the star Proxima Centauri. Those three planets are the only habitable ones within 5 parsecs outside the Solar System. The life on those three planets are DNA based, which indicates some sort of panspermia.

    There are settlments on the three extra solar planets. Interstellar travel is a bit expensive, though recent developments have made it more affordable than has been the case until about 20 years ago. The first extra solar colonies are being established on those three habitable planets.

  4. - Top - End - #4
    Ogre in the Playground
    Join Date
    Jul 2015

    Default Re: Traveller Solar System

    Do you have any plans for other small solar system bodies? Your map includes Pluto, but Pluto is not a unique object, it's simply the best-known (and first discovered) member of a large class Trans-Neptunian Objects, of which there at (at a minimum) several hundred large enough to be in hydrostatic equilibrium. Also, while you've diagrammed several main belt objects such as Ceres, you don't seem to have mentioned any of the other notable asteroid clusters in the solar system such as the Jovian Trojans (about 1/5th the mass of the main belt) or the Neptunian Trojans. Also, there's the possibility that Planet Nine (or some similar large, orbit-disturbing outer system object) may exist in the distant outer system, and it presumably would have been either found or conclusively disproved by this point.

    Mars and Venus have been terraformed and have populations in the billions.
    These two tasks are of vastly different scope. Terraforming Mars is something possible with fairly well understood technologies, but Venus is an entirely different beast. The effort that would take is mind-boggling.

    Most agriculture occurs off Earth. Food production isn't very manpower intensive, so there are orbital colonies surrounding Earth were food is grown. Food is then sent down to the Earth's surface in exchange for credits.
    Moving agriculture off of Earth seems highly unlikely. Agricultural goods are extremely bulky, and transporting food for 32 billion people would be a transportation nightmare that would require the planet to be pin cushioned with space elevators. It seems much more likely that food should be primarily grown on Earth, it's difficult to imagine a scenario where it would be easier to grow food off earth than on it (even in entirely self-contained mechanical 'farms,' it's still easier to do that on Earth than otherwise).

    Those three planets are the only habitable ones within 5 parsecs outside the Solar System.
    There are quite a few stars within 5 parsecs, it would be quite the statistical anomaly to have the only other habitable planets be in the Centauri system.
    Resvier: a P6 homebrew setting

  5. - Top - End - #5
    Dwarf in the Playground
     
    PaladinGuy

    Join Date
    Jul 2019

    Default Re: Traveller Solar System

    Quote Originally Posted by Mechalich View Post
    Do you have any plans for other small solar system bodies? Your map includes Pluto, but Pluto is not a unique object, it's simply the best-known (and first discovered) member of a large class Trans-Neptunian Objects, of which there at (at a minimum) several hundred large enough to be in hydrostatic equilibrium. Also, while you've diagrammed several main belt objects such as Ceres, you don't seem to have mentioned any of the other notable asteroid clusters in the solar system such as the Jovian Trojans (about 1/5th the mass of the main belt) or the Neptunian Trojans. Also, there's the possibility that Planet Nine (or some similar large, orbit-disturbing outer system object) may exist in the distant outer system, and it presumably would have been either found or conclusively disproved by this point.



    These two tasks are of vastly different scope. Terraforming Mars is something possible with fairly well understood technologies, but Venus is an entirely different beast. The effort that would take is mind-boggling.



    Moving agriculture off of Earth seems highly unlikely. Agricultural goods are extremely bulky, and transporting food for 32 billion people would be a transportation nightmare that would require the planet to be pin cushioned with space elevators. It seems much more likely that food should be primarily grown on Earth, it's difficult to imagine a scenario where it would be easier to grow food off earth than on it (even in entirely self-contained mechanical 'farms,' it's still easier to do that on Earth than otherwise).



    There are quite a few stars within 5 parsecs, it would be quite the statistical anomaly to have the only other habitable planets be in the Centauri system.
    I have maps for the Moons of Earth and Mars, Jupiter and Saturn, and Uranus and Neptune. I have them for Spelljammer, so I just have to create stats for the Spelljammer game.

    I included Pluto because its well known, and the Map would have to be bigger to include Eris, and I obviously can't include every object in the Solar System. I have spaces for 20 objects per chart, so ten for the Sun out to Pluto and the other ten are select asteroids. Other asteriods will have to be random or added as needed, Basically its a representative sampling of what's in the Solar System.

    As for Space based agriculture. Tech Level 12 includes most of the standard starships and spaceships, so getting into space isn't that hard. Food can be grown in space with material from the asteroids, and capsules are manufactured in space to contain the food and protect it from atmospheric entry, the capsules are them opened up, and they are recycled for their material and used for other things on Earth. Mostly the life support for a plant is less demanding than that for an animal. Plants don't need full gravity, and there are environmental concerns on Earth for growing the food to feed 32 billion people, and people like parkland better than they like farms, and of course the fewer farms there are, the more land there is to build houses on. Transportation is easier in the 23rd century than it is in the 21st century. There are lots of commuters and school kids taking field trips to China or Australia, and going on a geology trip to the Moon for a day is not unheard of either.

    Relations between Russia, the United States, and China are friendlier than they are today, these days it is simply called the Republic of China, Taiwan is a seperate country by the way. Japan still has an Emperor and a parlimentary democracy. The United Kingdom still has its royals. Russia has become a major power once again with a population of over a billion, and it has helped somewhat that the winters in Siberia aren't as cold as they once were.

    Mars was easier, Venus came later. The asteroid belt was developed partiallly to deal with the engineering challenges of terraforming Venus. A lot of hydrogen was imported to Venus, to turn its carbon-dioxide atmosphere into water and graphite. The graphite was buried under the crust, the water became oceans and lakes. There is still six times as much nitrogen as there is in Earth's atmosphere, there is enough oxygen for humans to breathe, but the atmosphere is considered dense, though it goes down to standard on the highest mountain peaks in the Maxwell mountain range on the continent of Ishtar, the tallest mountains are 7 miles high. Besides Ishtar there is another continent that straddles the equator called Aphrodite. A Venusian day is the same as it aways was, the planet turns very slowly, Venusian plants and animals had to be genetically engineered for this environment although they are based on Terran stock. There is an artificial cloud layer high in the atmosphere to block 75% of the Sunlight from reaching the surface. the sky from the ground appears bluish-white, when there are not lower clouds overhead. The Sun appears as a hazy yellow disk on the best days or a bright spot on a cloudy sky on cloudier days. At night the clouds clear up and the stars are sometimes visible from the ground. Some plants grow leaves during the day and then lose them during nightfall, while others are connifers which keep there needles through the day night cycles. The polar regions are temperate, and it sometimes snows there at night, there are permanent snow packs on the highest mountains.

    Mars is a dry arid world with a thin atmosphere, about 30% of its suface is covered in water. Having 38% of Earths gravity means there is an enhanced greenhouse effect here, as the layers of atmosphere are thicker than on Earth despite the fact that the atmosphere on the surface is thin. The atmosphere at the summit of Olympus Mons is barely breathable, Oxygen masks are often worn there. The light is dimmer on Mars than on Earth even on a clear day. Fortunately on Mars in most places many days are clear. Mars has large agricultural areas, lots of land for growing food, some of it is exported to Earth. Plants grow more slowly, but the growing season is twice as long, and at least the day is of a tollerable length.

    There are 3 planets outside the Solar System that are capable of supporting human life, other planets have live, but are not compatible with humans. There is evidence of some past civilization inhabiting Alpha Centauri, some structures of unknown origin, although extremely old, and the life on its surface seems related to Earthlife, although humans did not put it there. Other planets need some work, which means terraforming. 5 parsecs is about the limit of human exploration in the 23rd century, though NASA and other space agencies have sent deep space probes further out.

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