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Hydra (in astronomy)

Hydra, in astronomy, southern constellation lying S of Corvus, Crater, Virgo, Leo, and Cancer. It is a long, slender, winding constellation traditionally depicted as a snake and known also as the Water Monster or Sea Serpent. The only bright star in the constellation is Alphard (Alpha Hydrae); it is a double star, but the two components can be detected only with a telescope. Hydra reaches its highest point in the evening sky in the spring.

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"Hydra (in astronomy)." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 22 Jul. 2017 <http://www.encyclopedia.com>.

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Hydra

Hydra Largest constellation in the sky. It represents the water snake killed by Heracles in classical mythology.

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"Hydra." World Encyclopedia. . Encyclopedia.com. 22 Jul. 2017 <http://www.encyclopedia.com>.

"Hydra." World Encyclopedia. . Encyclopedia.com. (July 22, 2017). http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/hydra

"Hydra." World Encyclopedia. . Retrieved July 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/hydra