Protoplanet
s Moon formed from a colossal impact of a hypothetical protoplanet, named Theia planet Theia ... been referred to as protoplanets. ref name msnbc cite web date 2009 10 08 title Protoplanet frozen ..
Thea
mythology Theia planet , a Mars sized protoplanet that may have been involved in the creation of the Moon ..
Accretion (astrophysics)
electrostatically, in protoplanetary disc s and Gas giant protoplanet systems, eventually leading to planetesimals ..., in close analogy to the solar system as a whole. The Jovian protoplanet may be accreting gas from ..
Planetesimal
through their mutual gravity, enormously aiding further growth into moon sized protoplanet s. This is how ... planetesimals can survive such encounters and continue to grow into protoplanet s and later planet s. It is generally ..
Iron catastrophe
of the dense NiFe globules increased the temperature of the protoplanet above the melting ..
Mesoplanet
number of smaller objects. See also Asteroid Centaur planetoid Fusor astronomy Protoplanet Planetesimal ..
Dynamical friction
the formation of planetary systems, dynamical friction between the protoplanet and the protoplanetary disk causes energy to be transferred from the protoplanet to the disk. This results in the inward ..
Herbig Ae/Be star
Herbig Ae Be stars show significant brightness variability. They are believed to be due to clumps protoplanet ..
HD 141569
to the conclusion of a protoplanet in formation around the star. The planet does not have to be in the gap ..
T Tauri star
stellar wind s. Another source of brightness variability are clumps protoplanet s and planetesimal ..
Planetary differentiation
, to accumulate in protoplanet s. Protoplanets had higher concentrations of radioactive elements early ..
Hot Jupiter
of the solid disk materials in that region are scattered outward, including planetesimal s and protoplanet ..
TW Hydrae
by the Astrophysical Journal in April 2007. Disproven protoplanet In December 2007, a team led by Johny ..
Planemo
planet celestial body smaller than a planet protoplanet Planemo planetesimal Planetoid Planetar astronomy ..
2004 XR190
planet s Protoplanet planetary embryos in the early Kuiper belt, and Orbital resonance resonance interaction ..
Origin of water on Earth
Neptunian object s or water rich meteorites protoplanet s from the outer reaches of the asteroid ..
Mu Arae c
on the way Baraffe . If an eroded gas giant, the sun would have boiled the planet from a larger protoplanet ..
HD 172555
a protoplanet in the HD172555 system with a liquid magma surface. This is not unexpected ..
Dawn (spacecraft)
in detail two of the largest protoplanet s remaining intact since their formation. Ceres and Vesta ... system . Ceres and Vesta were chosen as two contrasting protoplanet s, one apparently wet ..
2M1207b
An Improbable Solution to the Underluminosity of 2M1207B A Hot Protoplanet Collision Afterglow, Eric ..
Nebular hypothesis
is initially a slow process, which continues for several million years, but after the forming protoplanet ... model of Otto Schmidt 1944 , protoplanet theory of William McCrea astronomer William McCrea 1960 ..
Timetable of the Precambrian protoplanet Theia planet Theia see giant impact hypothesis . The Earth was considerably ..
Clearing the neighbourhood
of this first step. Details The phrase refers to an orbiting body a planet or protoplanet sweeping ..
2 Pallas
that the largest asteroids, including Pallas, are protoplanet s. During the planetary formation ... high resolution images of Pallas confirms asteroid is actually a protoplanet author Mona Gable accessdate ..
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