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 434288 MS 434289 MS 434290 MS 434291 MS 434292 MS 434293 MS 434294 MS 434295 MS 434296 MS 434297 MS 434298 MS 434299 MS 434300 MS 434301 MS 434302 MS 434303 MS 434304 MS 434305 MS 434306 MS 434307 MS 434308 MS 434309 MS 434310 MS 434311 MS 434312 MS 434313 MS 434314 MS 434315 MS 434316 MD 446342 MD 446343 MD 446344 MD 446345 MD 446346 MD 446347 MD 446348 MD 446349 MD 446350 MD 446351 MD 446352 MD 446353 MD 446354 MD 446355 MD 446356 MD 446357 MD 446358 MD 446359 MD 446360 MD 446361 MD 446362 MD 446363 MD 446364 MD 446365 MD 446366 MD 446367 MD 446368 MD 446369 MD 446370