planetary nebula
— Noun
– English
~ a nebula that was once thought to be a star with its planets but is now thought to be a very hot star surrounded by an expanding envelope of ionized gases that emit a fluorescent glow because of intense radiation from the star
planetary
— Adjective
– English
~ of or relating to or resembling the physical or orbital characteristics of a planet or the planets; "planetary motion"; "planetary year"
planetary
— Adjective
– English
~ of or relating to or characteristic of the planet Earth or its inhabitants; "planetary rumblings and eructations"- L.C.Eiseley; "the planetary tilt"; "this terrestrial ball"
planetary
— Adjective
– English
~ having no fixed course; "an erratic comet"; "his life followed a wandering course"; "a planetary vagabond"
planetary
— Adjective
– English
~ involving the entire earth; not limited or provincial in scope; "global war"; "global monetary policy"; "neither national nor continental but planetary"; "a world crisis"; "of worldwide significance"
planetesimal
— Noun
– English
~ one of many small solid celestial bodies thought to have existed at an early stage in the development of the solar system
planetesimal hypothesis
— Noun
– English
~ (cosmology) the theory that the solar system was formed by the gravitational accumulation of planetesimals
planethjul
— Noun
– Danish
~ mindre tandhjul der griber ind i og bevæger sig ru ...
planetoid
— Noun
– English
~ any of numerous small celestial bodies that move around the sun