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Scorpius Genitive: Scorpii Abbreviation: Sco On Meridian: 9 pm, July 20.

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Presentation on theme: "Scorpius Genitive: Scorpii Abbreviation: Sco On Meridian: 9 pm, July 20."— Presentation transcript:

1 Scorpius Genitive: Scorpii Abbreviation: Sco On Meridian: 9 pm, July 20

2 Scorpius

3

4

5 part of the Zodiac

6 Scorpius resembles, quite noticeably, a Scorpion's tail and vague body Greek mythology the Scorpion sent by Gaia (or possibly Hera) to kill the hunter Orion rising out of the ground at the goddess' command to attack opposite Orion

7 Scorpius More Greek Mythology Apollo sent Scorpion after Orion, having grown jealous of Artemis' attentions to the man Apollo helped Artemis hang Orion's image in the night sky to apologize However, the Scorpion was also placed up there, and every time it appears on the horizon, Orion starts to sink into the other side of the sky, still running from the attacker

8 Scorpius Chinese mythology stars included in the Azure Dragon, a powerful but benevolent creature whose rising heralded spring A rabbit in Chinese Zodiac

9 Scorpius Sun spends less time in Scorpius than any other constellation Nov 23 – Nov 30

10 Scorpius Antares (  Sco) marks the heart of the Scorpion name from “anti-” and Ares (Mars) “rival of Mars” M1 type Ib 325 ly away tints nearby dust cloud B3 companion, often appearing greenish in contrast

11 Scorpius Butterfly Cluster Messier Object 5 (M6) 1764 catalogue of comet- like objects NGC 6405 cluster ~1600 ly away most bright stars are young type B stars (blue) Brightest BM Sco is a K type giant

12 Scorpius Ptolemy Cluster M7, NGC 6475 described by Ptolemy AD 130 Hodierna 1654 counted ~30 stars Messier catalogued 1764

13 Scorpius Ptolemy Cluster 800-1000 ly away 1.3° across ~80 stars ~18-25 ly across

14 Scorpius M4 (NGC 6121) globular cluster de Chéseaux in 1746, catalogued by Messier in 1764 ~7200 ly away may be closest globular cluster first globular cluster in which stars were resolved size of the moon in the sky  ~75 ly across

15 Scorpius M80 Spans ~10' in sky ~32,600 ly away ~95 ly across several hundred thousand stars

16 Scorpius


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