Friday night’s gibbous moon appears low in the southeastern sky after sunset. You’ll see it above the bright planet Saturn. The two are in the zodiacal constellation Scorpius. The moon is five days from full, and it is the Fisherman’s Moon.

Take a more careful look below these two companions and you can’t help but notice there is the red star Antares, the principal star in Scorpius. This is a busy area in the sky this summer. Look again and slightly to the west and you’ll see the red planet Mars still a brilliant object in our southern sky. Mars has lost much of its brilliance from a month ago, though the planet is still a wonderful sight against the Milky Way.

A favorite summer constellation, Hercules is now high in the east well after sunset. The constellation is a big story in Roman mythology and depicts a Greek hero of super strength — an ancient Super Man. For astronomers the constellation contains one of the most sought after star clusters, known as M13. With a pair of binoculars, the star cluster looks like a faint dust ball, containing a cloud of thousands of stars. With a telescope, the cluster is a sparkling jewel made up of so many uncountable stars, estimated at over 300,000.

Every constellation in the sky has its hidden jewels.