Gas Planet Accretion (2000)
This shows a gas giant planet, right, forming around the growing Sun, left, in the
so-called solar nebula which surrounded the Sun as it formed. The gas planet is so
massive that it is sucking in material from either side of a gap (dark) that it has
gravitationally cleared for itself. In this manner, the planet will gorge itself
until it reaches a mass dozens or even hundreds of times more massive than Earth.