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The Constellation Hydra, the Sea Serpent
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Hydra

Hydra, the sea serpent, may be the longest and largest of all constellations, but its stars are very faint. It is so long that four constellations run along its northern side. These are Cancer, Leo, Virgo and Libra.

In Greek mythology, Hercules slew Hydra, a horrible serpent with many heads that grew back as soon as they were cut off. Killing Hydra was one of Hercules' twelve labors. He also defeated Leo, the lion, and Draco, the dragon.

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Cancer

The constellation Cancer is a crab. Look for Cancer from December through June. It's hard to see Cancer because the stars are so dim. To find Cancer, first find Gemini and Leo. Cancer is right between...more

Leo

Leo, the lion, is easy to find because his head looks like a backward question mark with the bright star Regulus at the bottom. Regulus, Leo's brightest star, means "little king" in Latin. This star is...more

Virgo

The constellation Virgo is The Maiden. People thought it was Athena, Artemis, Persephone or Demeter. She is carrying a grain of wheat and a staff. Can you tell it's a person in the picture? The maiden...more

Hercules

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The Lernaean Hydra

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Crater

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Bootes, the herdsman, rides through the sky during the late Spring and early Summer. Bootes is fun to look at because it has the shape of a kite, with the bright star Arcturus at the point of the kite...more

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