-
hypothetical protoplanet called Theia with Earth,
early in the
Solar System's history. In the
inner Solar System, the
three protoplanets to
survive more-or-less...
- and
accretion of
protoplanets tidally interacting with a gas disk: I.
Effects of
interaction with
planetesimals and
other protoplanets". Icarus. Jovian...
-
accretion is far more problematic. The
escape velocity for the
small protoplanets about 20
astronomical units (AU) from the
center of the
Solar System...
-
Theia (/ˈθiːə/) is a
hypothesized ancient planet in the
early Solar System which,
according to the giant-impact hypothesis,
collided with the
early Earth...
- (December 2018). "Dawn mission's
search for
satellites of Ceres:
Intact protoplanets don't have satellites". Icarus. 316: 191–204. Bibcode:2018Icar..316....
- may be many
protoplanets orbiting the star or each other, but over time many will collide,
either to form a larger,
combined protoplanet or
release material...
-
solar nebula as a
group of planetesimals, the
smaller precursors of the
protoplanets. However,
between Mars and
Jupiter gravitational perturbations from Jupiter...
-
dynamical friction between the
protoplanet and the
protoplanetary disk
causes energy to be
transferred from the
protoplanet to the disk. This
results in...
-
attracted each other,
coalescing to form ever
larger bodies.
Hundreds of
protoplanets may have
existed in the
early Solar System, but they
either merged or...
-
condensed into the oceans,
augmented by
water and ice from asteroids,
protoplanets, and comets.
Sufficient water to fill the
oceans may have been on Earth...
