nebular hypothesis

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nebular hypothesis

n.
A hypothesis concerning the formation of stars and planets, and therefore the origin of the solar system, according to which a rotating nebula underwent gravitational collapse into a star with an accretion disk, from which planets condensed or formed by coagulation of dust particles into increasingly larger bodies.

nebular hypothesis

n
(Astronomy) the theory that the solar system evolved from the gravitational collapse of nebular matter

neb′ular hypoth′esis


n.
the theory that the solar system evolved from a mass of nebular matter.
[1830–40]

neb·u·lar hypothesis

(nĕb′yə-lər)
An explanation of the origin of the solar system according to which a rotating nebula cooled and contracted, flattening into a disk shape with a central bulge. The matter in the disk condensed into the planets, their moons, asteroids, and comets, while the great mass at the center became the sun.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.nebular hypothesis - (cosmology) the theory that the solar system evolved from a hot gaseous nebulanebular hypothesis - (cosmology) the theory that the solar system evolved from a hot gaseous nebula
scientific theory - a theory that explains scientific observations; "scientific theories must be falsifiable"
cosmogeny, cosmogony, cosmology - the branch of astrophysics that studies the origin and evolution and structure of the universe
References in periodicals archive ?
These stars, known as red dwarfs, are of enormous interest for studies of planetary formation and evolution, the study states.
These data suggest that liquid water may not have been abundant on the Martian surface since a few hundred million years after planetary formation, and therefore Mars may have been a cold and dry planet for the vast majority of its history," paper author Bill Cassata said in a statement from (https://www.
Reading this section carefully pays off, as many of the theories of planetary formation discussed in it reappear in later chapters.
Then again, our data on planetary formation is still extremely limited.
A current theory of planetary formation suggests such an object is unlikely to have formed in place with its Jupiter-mass planet, but would instead be an object captured by the gravity of the planet later on in the evolution of this planetary system.
The results of this study will shed light on the early Solar System evolution and on processes of planetary formation.
Now in its eighth year of a nearly nine-year-long mission, Dawn has already advanced human understanding of planetary formation by giant leaps with the data it has returned over the last four years.
10), Christopher Crockett detailed the upset and what it means for theories about planetary formation.
He does this through the evidence of biology and in terms of Earth's planetary formation and geohistory.
One theory of planetary formation suggests that some gaseous giant protoplanets of Jovian mass formed first from a solar nebula via disk instability.

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