All the stars and planets will be destroyed, along with the Earth. If God had created intelligent life on other worlds, it is hard to imagine that their lives would be calibrated by the failures of Earth's inhabitants. It seems unlikely and unfair that their distant planets would be destroyed by God because of His plan for Earth. The implication of Scripture is that there are no other intelligent beings besides man, animals, and the angels. Practical experience suggests that nothing in the universe is probably in its more perfect, originally created state.
Earth is certainly no longer the paradise described in Genesis.
Stars are dying. The moon and planets have been pummeled. It seems that everything in the universe will eventually wear out. Without these heavenly bodies, the job of keeping time and navigation would have been far more difficult. We learn from history that from the earliest days, ancient peoples used the movement of stars in producing their calendars and finding their way across great distances, just as God designed from the beginning.