Feast your eyes on the NAS Sagan. the largest interplanetary vessel ever created by humanity. The NAS indentifier stands for "North American Ship" similar to how USS is used today. The pride of the NASA (now standing for North American Space Agency, and almost exclusively pronounced as an abbreviation rather than an acronym), the Sagan not only symbolizes the advancements the NASA has made in interstellar construction, but also the might that the North American military can project into the solar system. Striking fear into the hearts of pirates and rogue corporates alike, the Sagan has a combat role somewhere between what a battleship and a missle cruiser would had in the United States Navy. The turrets on the top are actually electromagnetic catapults similar to the Arcus Coilgun described in a previous post. These are used to launch probes, unmanned transport shuttles and in a combat situation, missles or even "dumb ordinance" consisiting of large metal slugs.
The Sagan is powered by 3 immense Helium3 fusion reactors, capable of generating as much electricity as New York City uses today. Though in the time of Oort Cloud much of the developed world uses more advanced Hydrogen-Boron fusion reactors, it was believed that since the home dock of the Sagan would be the Moon's Arcadium station, Helium3, which is the Moon's primary export, would be a more convienient fuel.
Though the Sagan is theoretically capable of being away from dock for more than a year without needing to refuel, the longest it has been away from dock is the 2 month round trip dropping off employees of military contractor Kurts and Wotsky to Mars' Cydonia colony.
The Sagan is the first ship to use the new alternative to rotational gravity, Variable Magnetic Synthetic Gravity, a system outfitted on the Sagan by Europe's Applied Erudition Inc. VMSG (Usually reffered to as "Vis-Mag") works by applying a small magnetically responsive sticker to any object you would like to be kept in place. Tables, desks, shelves, and counters have a small generator in them that attracts objects with these stickers keeping them in place. An object has about the resistance to being picked up as something velcro'd into place.
Footwear has a similar, but more sophisticated system. The normal problem with using magnets to keep your feet in place in a zero g environment is that walking is awkward, you need to apply more force to basically tear your feet off the ground, step high to keep them from becomming reattached to the floor. the Vis-Mag system has a small computer that detects the muscle clature in your foot, and has the magnetic force react accordingly, creating a more ergonomic, natural feeling step. This system comes in a variety of configurations, including wrist "grippers" for maintaince workers working in the bowels of the ship, and with a few modifications it can be used to walk on walls and ceilings. 
Vis-Mag doesn't replace gravity, the crew and passengers aboard the Sagan still need to take the Apollox medication invented decades previous to fight off space adaptation syndrome, and many normal parts of life such as bathrooms and sleeping quarters use further modified systems to work normally in microgravity.





















