Clouds are formed from the evaporation of the oceans' water that is warmed by the Sun and rises high into the atmosphere, condensing in tiny droplets on minute particles of dust.
As the comet nears the sun, its ice melts, releasing gas and dust that stream away into space.
当彗星靠近太阳时,它的冰层融化,释放的气体和尘埃飘向太空。
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Radiation from the sun pushes dust particles away from the coma, forming a dust tail, while charged particles from the sun convert some of the comet's gases into ions, forming an ion tail.