ANDROMEDA
AQUARIUS
AQUILA
ARIES
AURIGA
BOOTES
CAMELOPARDALIS
CANCER
CANES VENATICI
CANIS MAJOR
CANIS MINOR
CAPRICORNUS
CASSIOPEIA
CENTAURUS
CEPHEUS
CETUS
COMA BERENICES
CORONA BOREALIS
CORVUS
CRATER
CRUX
CYGNUS
DELPHINUS
DRACO
EQUULEUS
ERIDANUS
GEMINI
HERCULES
HYDRA
LACERTA
LEO
LEO MINOR
LEPUS
LIBRA
LYNX
LYRA
MONOCEROS
OPHIUCHUS
ORION
PEGASUS
PERSEUS
PISCES
SAGITTA
SAGITTARIUS
SCORPIUS
SCUTUM
SERPENS
SEXTANS
TAURUS
URSA MAJOR
URSA MINOR
VIRGO
VULPECULA
Hercules is one of the most ancient constellations, placed in the sky to commemorate his completion of the fabled twelve labours assigned him by the gods.
As seen in the illustration below by John Flamsteed (1646 - 1719),
Hercules is depicted as kneeling (often referred to as the kneeling one), and either sideways or upside down in the sky.
The constellation contains the largest and brightest globular star cluster in the northern sky, M13. You can actually see M13 with your naked eye, but it is much more impressive with binoculars. And if you're lucky enough to have a telescope handy, M13 is one of the more spectacular sights in the sky.
To find M13, start with the brightest star in the sky, the brilliant Vega, in the constellation Lyra. Then look down and find the square of stars that make up the asterism known as the keystone of Hercules. Look for M13 about a third of the way along its northern edge. The photo of M13 below was taken by the Hubble Space Telescope.