- planetesimal theory
- planetesimal hypothesis or planetesimal theory,the hypothesis that minute bodies in space move in planetary orbits and gradually unite to form the planets of a given planetary system.
Useful english dictionary. 2012.
planetesimal theory
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planetesimal hypothesis — noun (cosmology) the theory that the solar system was formed by the gravitational accumulation of planetesimals • Topics: ↑cosmology, ↑cosmogony, ↑cosmogeny • Hypernyms: ↑scientific theory * * * noun : a hypothesis in … Useful english dictionary
Planetesimal — Planetesimals are solid objects thought to exist in protoplanetary disks and in debris disks.A widely accepted theory of planet formation, the so called planetesimal hypothesis of Viktor Safronov, states that planets form out of dust grains that… … Wikipedia
planetesimal — /plan i tes euh meuhl/, Astron. n. 1. one of the small celestial bodies that, according to one theory (planetesimal hypothesis), were fused together to form the planets of the solar system. adj. 2. of or pertaining to a planetesimal or… … Universalium
planetesimal — n. any of a vast number of minute planets or planetary bodies. Phrases and idioms: planetesimal hypothesis the theory that planets were formed by the accretion of planetesimals in a cold state. Etymology: PLANET, after infinitesimal … Useful english dictionary
planetesimal — plan•e•tes•i•mal [[t]ˌplæn ɪˈtɛs ə məl[/t]] n. astron. one of the small celestial bodies that, according to one theory, were fused to form the planets of the solar system • Etymology: 1900–05; planet+ (infinit) esimal … From formal English to slang
Chamberlin–Moulton planetesimal hypothesis — The Chamberlin–Moulton planetesimal hypothesis was proposed in 1905 by geologist Thomas Chrowder Chamberlin and astronomer Forest Ray Moulton to describe the formation of the solar system. It was proposed as a replacement for the Laplacian… … Wikipedia
scientific theory — noun a theory that explains scientific observations scientific theories must be falsifiable • Hypernyms: ↑theory • Hyponyms: ↑big bang theory, ↑big bang theory, ↑nebular hypothesis, ↑planetesimal hypothesis … Useful english dictionary
Nebular hypothesis — Star formation Interstellar medium Molecular cloud … Wikipedia
List of University of Chicago people — The following is a list of people affiliated with the University of Chicago, including alumni, current and former faculty members, students, and others. The University of Chicago was founded in 1890 by American industrialist and philanthropist… … Wikipedia
Thomas Chrowder Chamberlin — Infobox Scientist name = PAGENAME box width = image size =150px caption = PAGENAME birth date = September 25,1843 birth place = Mattoon, Illinois death date = November 15, 1928 death place = Chicago residence = citizenship = nationality =… … Wikipedia
