Lernaean Hydra that Hera placed the Hydra and crab as constellations in the night sky after Heracles slew him. When the sun is in the sign of Cancer (Latin for "The Crab"), the constellation Hydra has its head nearby. In fact, both constellations derived from the earlier Babylonian signs: Bashmu ("The Venomous Snake") and Alluttu ("The Crayfish"). Primary sources Secondary sources Lernaean Hydra The Lernaean Hydra or Hydra of Lerna (, "Lernaîa Hýdra"), more often known simply as the Hydra, is a serpentine water monster in Greek and Roman mythology. Its lair was the lake of Lerna in the Argolid, which was
Greek mythology in popular culture to name its equipment such as the Nike missile project and the Navy having over a dozen ships named from Greek mythology. Greek mythology has been the source for names for a number of ships in the British navy as well as the Australian Royal Navy which has also named a training facility in Victoria called HMAS Cerebus. The Canadair CP-107 Argus of the Royal Canadian Air Force is named in honor of both the hundred eyed Argus Panoptes the "all seeing" and Odysseus' dog Argus who was the only one who identified Odysseus upon his return home. Many celestial