IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg)
Hydra
The Hydra
OriginAncient
AbbreviationHya
GenitiveHydrae
Pronunciation/ˈhaɪdrə/ genitive /ˈhaɪdriː/
HIGH-druh
LocationCelestial Equator
Primary StarAlphard (α Hya)
Right Ascention 9h 28m Declination -8° 40'
Martian Solar Lag δ(🜨→♂) +0.272 h (16.3 min)
Hydra represents the Lernaean Hydra, a reptilian monster so vile that even its breath and blood were highly poisonous. It had nine serpent heads, eight mortal and one immortal. Every time one was cut off two would grow in its place. Defeating the Lernaean Hydra was the second labor assigned to Hercules by King Eurystheus. In the marshes of Lerna, Hercules drew out the Hydra from its lair, and with his mighty club, bashed one of its heads in. In its place, two heads sprouted, just as mean and deadly as the original. He realized he would need to take a different approach. He had his nephew Iolaus quickly cauterize each stump after it was bashed in. This prevented the heads from growing back. Hercules did this with each of the mortal heads. He struck off the immortal head and buried it deep in the ground and placed a huge rock on top of it. With his second labor complete, he dipped the tips of his arrows into the blood of the Hydra, covering them with deadly poison. In a second myth involving Hydra, this constellation represents the snake that Corvus used in a lie to Apollo.
www.underthesky.com
Hydra as depicted by Johann Bayer in his Uranometria (1603). Source image provided by www.RareMaps.com — Barry Lawrence Ruderman Antique Maps Inc. Via www.underthenightsky.com.
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MS 79266 MS 79267 MS 79268 MS 79269 MS 79270 MS 79271 MS 79272 MS 79273 MS 79274 MS 79275 MS 79276 MS 79277 MS 79278 MS 79279 MS 79280 MS 79281 MS 79282 MS 79283 MS 79284 MS 79285 MS 79286 MS 79287 MS 79288 MS 79289 MS 79290 MS 79291 MS 79292 MS 79293 MS 79294 MD 81458 MD 81459 MD 81460 MD 81461 MD 81462 MD 81463 MD 81464 MD 81465 MD 81466 MD 81467 MD 81468 MD 81469 MD 81470 MD 81471 MD 81472 MD 81473 MD 81474 MD 81475 MD 81476 MD 81477 MD 81478 MD 81479 MD 81480 MD 81481 MD 81482 MD 81483 MD 81484 MD 81485 MD 81486 MD 81487