Astronomers have long come to a similar conclusion: that the Earth will be obliterated by a giant fireball as the sun burns up and expands so that its surface touches the planet.

• 天文学家们也得出了相似的结论：由于太阳不断燃烧和膨胀，终有一天太阳表面会与地球表面接触，我们的地球会以此而被太阳这个巨大的火球所湮没。