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 Chief Medical Officer Norbert Kraft, Mission Concept Artist Bryan Versteeg, Senior Marketing Strategist KC Frank, and Chief Information Officer Tom Van Braeckel. Mars One's team of advisers consists of over 30 industry and scientific experts, including Mason Peck, Peter Smith, James Kass, K.R. Sridhara Murthi, Esther Dyson, and Robert Zubrin. Mars One is not an aerospace company and will not manufacture hardware. Lansdorp assumes all major components are available in the aerospace market, and he thinks he has identified at least one potential supplier for each component of the mission. SpaceX mentioned that they had been contacted by Mars One,