page_title: Hydra (constellation)
section_title: Features
hierarchical_section_title: Hydra (constellation) / Features
caption_attribution_description: English: Photography of the constellation Hydra, the water snake Deutsch: Fotografie des Sternbildes Hydra, der Wasserschlange
context_page_description: Hydra is the largest of the 88 modern constellations, measuring 1303 square degrees, and also the longest at over 100 degrees. Its southern end borders Libra and Centaurus and its northern end borders Cancer. It was included among the 48 constellations listed by the 2nd century astronomer Ptolemy. It is commonly represented as a water snake. It is located in the southern hemisphere.
caption: The constellation Hydra as it can be seen by the naked eye.
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