planetary systems

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• Stars and planetary systems in fiction — The planetary systems of stars other than the Sun and the Solar System are a staple element in much science fiction. Contents 1 Overview 1.1 The brightest stars …   Wikipedia

• List of planetary systems — Number of extrasolar planet discoveries per year as of 7 July 2011, with colors indicating method of detection …   Wikipedia

• Planetary habitability — is the measure of a planet s or a natural satellite s potential to develop and sustain life. As the existence of life beyond Earth is currently uncertain, planetary habitability is largely an extrapolation of conditions on Earth and the… …   Wikipedia

• Planetary system — A planetary system consists of the various non stellar objects orbiting a star such as planets, moons, asteroids, meteoroids, comets, and cosmic dust. [p. 394, The Universal Book of Astronomy, from the Andromeda Galaxy to the Zone of Avoidance ,… …   Wikipedia

• planetary — [[t]plæ̱nɪtri, AM teri[/t]] ADJ: ADJ n Planetary means relating to or belonging to planets. Within our own galaxy there are probably tens of thousands of planetary systems …   English dictionary

• Planetary defense — Planetary defense, is the concept of protecting Earth (or another planet) from extraterrestrial threats such as near Earth objects or alien invasions.Mitigation of near Earth objectsNear Earth objects (NEOs) are asteroids, comets and large… …   Wikipedia

• Planetary — Saltar a navegación, búsqueda Planetary es una serie limitada de comics escrita en su totalidad por el guionista británico Warren Ellis e ilustrada de igual manera por John Cassaday. Publicada por la editorial Wildstorm narra las aventuras de un… …   Wikipedia Español

• Planetary engineering — is the application of technology for the purpose of influencing the global properties of a planet. [cite book| authorlink=Martyn J. Fogg| last=Fogg| first=Martyn J.| year=1995| title=Terraforming: Engineering Planetary Environments| publisher=SAE …   Wikipedia

• Planetary migration — occurs when a planet or other stellar satellite interacts with a disk of gas or planetesimals, resulting in the alteration of the satellite s orbital parameters, especially its semi major axis. The generally accepted theory of planet formation… …   Wikipedia

• Planetary surface construction — refers to artificial habitats and other structures constructed on the surface of other planets, asteroids, and other heavenly bodies. Planetary surface construction can be divided into three phases or classes, coinciding with a phased schedule… …   Wikipedia

• Planetary ring — Shepherd moon redirects here. For the Enya album, see Shepherd Moons. The moons Prometheus and Pandora shepherd the F ring of Saturn. A planetary ring is a ring of cosmic dust and other small particles orbiting around a planet in a flat disc… …   Wikipedia