Arcturus, the third-brightest star in the night sky, is in the east at nightfall and about the same altitude in the west at first light tomorrow. The light from Arcturus that reaches your eye tonight has been traveling through space since 1983.
Arcturus, the third-brightest star in the night sky, is in the east at nightfall and about the same altitude in the west at first light tomorrow. The light from Arcturus that reaches your eye tonight has been traveling through space since 1983.