But in a new book , two noted University of washington astrobiologists say the planet already has begun the long process of devolving into a burned-out cinder, eventually to be swallowed by the sun.

• 但是在最近一本书中，华盛顿大学两位声望卓著的天体生物学家称：这个星球已经走出漫长退化路途的第一步，它将燃为灰烬，最终被太阳吞没。