The discovery that Jovian-like planets are common around other stars and that gas and dust is swept out of the star's neighborhood early after the formation suggests that
A) the Terrestrial planets must form earlier than the Jovian planets.
B) all comets are much more massive than the Jovian planets.
C) all asteroids had to have formed in planets which then exploded
D) the Jovians may have formed directly very quickly,without the core accretion phase.
E) the Jovians may have formed directly very very slowly,without the core accretion phase.

Question

Quizplus · Accepted Answer

The presence of Jovian-like planets around other stars and the early clearing of gas and dust suggest that these planets may have formed quickly, possibly bypassing the slower core accretion phase.

The Discovery That Jovian-Like Planets Are Common Around Other Stars