EarthSky Tonight—Oct. 31, Arcturus is a Halloween ghost of the summer sun
Every Halloween – and a few days before and after – the brilliant star Arcturus sets at the same time and on the same spot on the horizon as the…
News for Norther Colorado and the world
Every Halloween – and a few days before and after – the brilliant star Arcturus sets at the same time and on the same spot on the horizon as the…