red giant

In early August 1596, astronomer David Fabricius observed a star in constellation Cetus, the sea monster, carefully noting the star’s position and brightness. Eighteen days later he noticed that the star had more than doubled in brightness.

The summer night sky is teeming with bright stars, but one outshines them all and has stories to tell that rival its brightness. Head outside at nightfall and look almost straight overhead to spot the brightest star in the summer sky, the red giant, Arcturus.