Hercules, a constellation of the Northern Hemisphere. It is best seen during the summer. It was represented by the ancient Greeks as the kneeling figure of the hero Hercules. Near the western edge is the globular star cluster Messier 13, comprising more than 50,000 stars about 30,000 light-years from the earth. Only a few stars of Hercules are brighter than fourth magnitude.
Stars are enormous celestial bodies hot enough to register millions of degrees. They're fascinating scientific phenomena, but is it actually possible for scientists to create them?
The changing phases of the moon have given us an enduring curiosity about the dark side of the moon. But is there really a dark side of the moon? What would we see there?