interplanetary orbit
101Leigh Brackett Solar System — The Leigh Brackett Solar System is a fictional analogue to the real world Solar System in which a majority of the planetary romances of Leigh Brackett take place.Although Brackett s stories do not form a series with a consistent chronology and… …
102comet — cometary /kom i ter ee/, cometic /keuh met ik/, cometical, adj. cometlike, adj. /kom it/, n. Astron. a celestial body moving about the sun, usually in a highly eccentric orbit, consisting of a central mass surrounded by an envelope of dust and… …
103Mercury (planet) — Mercury  ☿ …
104Wernher von Braun — Von Braun at his desk at Marshall Space Flight Center in May 1964, with models of the Saturn rocket family Born March 23, 1912(1912 03 23) Wirsitz, German Empire …
105Extrasolar planet — Planet Fomalhaut b (inset against Fomalhaut s interplanetary dust cloud) imaged by the Hubble Space Telescope s coronagraph (NASA photo) …
106Space elevator — A space elevator for Earth would consist of a cable anchored to the Earth s equator, reaching into space. By attaching a counterweight at the end (or by further extending the cable upward for the same purpose), the center of mass is kept well… …
107Specific orbital energy — In the gravitational two body problem, the specific orbital energy (or vis viva energy) of two orbiting bodies is the constant sum of their mutual potential energy ( ) and their total kinetic energy ( ), divided by the reduced mass. According to… …
108Saturn — /sat euhrn/, n. 1. an ancient Roman god of agriculture, the consort of Ops, believed to have ruled the earth during an age of happiness and virtue, identified with the Greek god Cronus. 2. Astron. the planet sixth in order from the sun, having an …
109Retrograde 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)… …
110Barnard's Star — The location of Barnard s Star Observation data Epoch J2000.0      Equinox J2000.0 …
