Apparent retrograde motion notable on Mars which has two natural satellites, Phobos and Deimos. Both moons orbit Mars in an eastward (prograde) direction, however Deimos has an orbital period of 1.23 Martian sidereal days, making it supersynchronous, whereas Phobos has an orbital period of 0.31 Martian sidereal days making it subsynchronous. Consequently, although both moons are travelling in an eastward (prograde) direction, they appear to be travelling in opposite directions when viewed from the surface of Mars due to their orbital periods in relation to the rotational period of the planet. All other planetary bodies in the Solar System also appear to periodically
Mars One Mars One Mars One is a small private Dutch organization that proposed in 2012 to land the first humans on Mars and leave them there to establish a permanent human colony in the coming decades. Mars One is not an aerospace company and will not manufacture hardware. Mars One consists of two entities: the not-for-profit "Mars One Foundation", and the for-profit company "Mars One Ventures" which is the controlling stockholder of the for-profit Interplanetary Media Group that also manages the broadcasting rights. The Mars One Foundation, based in the Netherlands, manages the project. The small organisation has 4 employees, and