The diversity of worlds is stunning, with some hot, some cold, some big, some little, some in solar systems so compact they can fit five planets inside the orbit of Mercury, and some with planets far-flung.

世界的多样性是很惊人的，有热的、冷的、大的、小的，有的在太阳系里，十分紧凑，甚至可以在水星的轨道里放上五颗行星，有些则相隔甚远。