direct orbit
31List of satellites in geosynchronous orbit — TOC This is the list of satellites in geosynchronous orbit. Those satellites are commonly used for communication purposes, such as radio and television networks, backhaul, and direct broadcast. A couple planned global navigation systems by China… …
32Quasi-direct — Lecture en continu La lecture en continu (en anglais : streaming), aussi appelée lecture en transit[1], diffusion en mode continu[2] ou encore diffusion de flux continu, désigne un principe utilisé principalement pour l envoi de contenu en… …
33Retrograde motion — This article is about retrograde motions of celestial bodies relative to a gravitationally central object. For the apparent motion as seen from a particular vantage point, see Apparent retrograde motion. Retrograde orbit: the satellite (red)… …
34Ground track — A ground track or ground trace is the projection of a satellite s orbit onto the surface of the Earth (or whatever body the satellite is orbiting). It is an imaginary path along the Earth s surface which traces the movement of an imaginary line… …
35Minor planet — Not to be confused with Dwarf planet. A minor planet is an astronomical object in direct orbit around the Sun that is neither a dominant planet nor a comet, and thus includes the dwarf planets. The orbital categories of minor planets are the… …
36Moons of Jupiter — Jupiter and its four largest moons (montage) Jupiter has 64 confirmed moons,[1][2] giving it the largest retinue of moons with reasonably secure orbits of any planet in t …
37List of natural satellites — This article is about the moons of planets and dwarf planets. For asteroid or minor planet moons, see Minor planet moon. Objects in the Solar System By orbit …
38Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
39Apollo program — insignia Apollo 11 astronaut Buzz Aldrin walking o …
40Communications satellite — A communications satellite (sometimes abbreviated to COMSAT) is an artificial satellite stationed in space for the purpose of telecommunications. Modern communications satellites use a variety of orbits including geostationary orbits, Molniya… …
