1. Dwellers of the fictional “Star Wars” planet Tatooine live under two suns. Earthlings may soon enjoy the same distinction. Betelgeuse, the ninth-brightest star visible to humans, is expected to transform itself from a “super red giant” to a “supernova.” If it does so as soon as the end of 2012, “we could see a second sun light up the sky, if only for a matter of weeks.” Others say the process could take another million years and that the 2012 prediction is just apocalyptic wishful thinking. Here, the details.