According to one hypothesis, the planet's gravitational field tugs on the protoplanetary disk of dust and gas from which it formed.
根据一种假设，这颗行星的重力场会对由尘埃和气体组成的原行星盘产生牵引力。
2
It is hypothesized that the primordial cloud of dust and gas from which all the planets are thought to have condensed had a composition somewhat similar to that of Jupiter.
据推测，所有行星都是由尘埃和气体组成的原始云团凝聚而成，其组成与木星的组成有些相似。
3
Planets are believed to emerge from the accretion of particles in a disk of gas and dust as they whirl around the star.