Planets are believed to emerge from the accretion of particles in a disk of gas and dust as they whirl around the star.

行星被认为是由围绕恒星旋转的气体和尘埃组成的圆盘中的粒子累积而成。

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Stars are the result of the gravitational collapse of huge clouds of gas and dust, whereas planets are thought to evolve by the accretion of the material left over from such collapses, which forms a rotating disc around the newly created star.

ECONOMIST: Twinkle, twinkle, giant planet