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Mars comes closer to Earth more than any other planet save Venus at its nearest—56 million km is the closest distance between Mars and Earth, whereas the closest Venus comes to Earth is 40 million km. Mars comes closest to Earth every other year, around the time of its opposition, when Earth is sweeping between the Sun and Mars. Extra-close ...
This is a category for any video game where the player controls actions taking place, at least partially, on Mars. The action must take place on the surface Mars itself, not simply in orbit above Mars. This includes any alternate universe Mars, such as after terraforming, or on a seemingly fantasical Mars, as long as it is in relation to Earth.
Crocco searched for an orbit with the following properties: Crosses the orbit of the Earth; Crosses the orbit of Mars; Orbital period of one year; With proper selection of a certain launch window, this would also have allowed the spacecraft to return one year after departure. By applying slight modifications to the trajectory it would have been ...
Bellevistat (Earth-Sun L4) – A second colony built as a primary heavy manufacturing center in zero gravity. It is used for in-space manufacturing. Named as a reference to the Spanish phrase, Belle Vista, or beautiful view. Qualifying competition, recurring. Columbiat (Earth-Sun L5) – A third colony built as a "Singapore-in-orbit".
Early attempts at 3D space simulation date back as far as 1974's Spasim, an online multi-player space simulator in which players attempt to destroy each other's ships. The earliest known space trader dates to 1974's Star Trader , a game where the entire interface was text-only and included a star map with multiple ports buying and selling 6 ...
Orbiter was developed as a simulator, [14] with accurately modeled planetary motion, gravitation effects (including non-spherical gravity), free space, atmospheric flight and orbital decay. [15] [16] The position of the planets in the solar system is calculated by the VSOP87 solution, while the Earth-Moon system is simulated by the ELP2000 ...
[6] [7] For each Earth–Mars cycler that is not a multiple of seven synodic periods, an outbound cycler intersects Mars on the way out from Earth while an inbound cycler intersects Mars on the way in to Earth. The only difference in these trajectories is the date in the synodic period in which the vehicle is launched from Earth.
The diagram shows a Hohmann transfer orbit to bring a spacecraft from a lower circular orbit into a higher one. It is an elliptic orbit that is tangential both to the lower circular orbit the spacecraft is to leave (cyan, labeled 1 on diagram) and the higher circular orbit that it is to reach (red, labeled 3 on diagram).