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Draco (constellation)

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Look toward the far northern sky to find the constellation Draco. Its name comes from the Latin word for dragon.

DracoCC
DracoCC

This group of stars is one of the 88 modern constellations. It was also listed by the Greek astronomer Ptolemy in the 2nd century. For people living in northern parts of the world, Draco is circumpolar. This means it never sets below the horizon. You can see it at any time of the year. It stays visible as the Earth turns.

Many interesting stars live within this dragon shape. One star is named Thuban, or Alpha Draconis. It is a blue-white giant star located 309 light-years away. Long ago, Thuban was the north pole star. It held that spot from 3942 BC until 1793 BC. Even the ancient Egyptian Pyramids were built to align with it. The brightest star in Draco is Gamma Draconis, also called Eltanin. It is an orange giant star.

Sidney Hall - Urania's Mirror - Draco and Ursa Minor
Sidney Hall - Urania's Mirror - Draco and Ursa Minor

Nearby is Rastaban, which is a yellow giant star.

Draco is also home to many far-off objects in space. You can find the Cat's Eye Nebula, which is a planetary nebula. An English astronomer named William Herschel discovered it in 1786. It is about 3,000 light-years away.

Draco-Triplet
Draco-Triplet

There are also very distant galaxies here. One is the massive Abell 2218 cluster. It is 3 billion light-years away. This cluster acts like a lens for light. It helps scientists study even more distant galaxies. You can even find the tiny Draco Dwarf Galaxy.

PGC 39058
PGC 39058

Albert G. Wilson found it in 1954.

Sometimes, the sky in Draco fills with falling stars. The October Draconids is a meteor shower. These meteors come from the comet 21P/Giacobini-Zinner. In 1933 and 1946, there were huge meteor storms. During those years, there were up to 10,000 meteors every hour! There is also a newer shower called the February Eta Draconids. It was discovered on February 4, 2011. These meteors come from a different, long-period comet. It is exciting to watch these lights streak across the dark sky.

Many old stories explain why the dragon is in the sky. Greek myths say Draco was a dragon named Ladon. Ladon guarded golden apples in a special garden. The hero Heracles killed the dragon during his labors. Then, the goddess Hera turned the dragon into stars.

Sidney Hall - Urania's Mirror - Draco and Ursa Minor
Sidney Hall - Urania's Mirror - Draco and Ursa Minor

Other stories say the dragon was a giant named Typhon. In Arabic astronomy, the stars look like camels instead. They see a mother camel and her babies. People use the stars to tell many different tales.

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🖼️ Images & Media (4)
File:DracoCC.jpg
DracoCC.jpg
File:Draco-Triplet.png
Draco-Triplet.png
File:PGC 39058.jpg
PGC 39058.jpg
File:Sidney Hall - Urania's Mirror - Draco and Ursa Minor.jpg
Sidney Hall - Urania's Mirror - Draco and...
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