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W 영어생각/30M EVERYDAY +2
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Serpens ("the Serpent", Greek Ὄφις) is a constellation of the northern hemisphere. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations defined by the International Astronomical Union. It is unique among the modern constellations in being split into two non-contiguous parts, Serpens Caput (Serpent's Head) to the west and Serpens Cauda (Serpent's Tail) to the east. Between these two halves lies the constellation of Ophiuchus, the "Serpent-Bearer". In figurative representations, the body of the serpent is represented as passing behind Ophiuchus between Mu Serpentis in Serpens Caput and Nu Serpentis in Serpens Cauda.

The brightest star in Serpens is the red giant star Alpha Serpentis, or Unukalhai, in Serpens Caput, with an apparent magnitude of 2.63. Also located in Serpens Caput are the naked-eye globular cluster Messier 5 and the naked-eyevariables R Serpentis and Tau4 Serpentis. Notable extragalactic objects include Seyfert's Sextet, one of the densest galaxy clusters known; Arp 220, the prototypical ultraluminous infrared galaxy; and Hoag's Object, the most famous of the very rare class of galaxies known as ring galaxies.

Part of the Milky Way's galactic plane passes through Serpens Cauda, which is therefore rich in galactic deep-sky objects, such as the Eagle Nebula (IC 4703) and its associated star cluster Messier 16. The nebula measures 70 light-years by 50 light-years and contains the Pillars of Creation, three dust clouds that became famous for the image taken by the Hubble Space Telescope. Other striking objects include the Red Square Nebula, one of the few objects in astronomy to take on a square shape; and Westerhout 40, a massive nearby star-forming region consisting of a molecular cloud and an HII region.

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30분 매일영어공부  (12) 2015.08.10

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30M EVERYDAY


30분의 매일영어공부가 여러분의 실전영어력을 키워줍니다.

아래의 링크를 통해 매일 4문제가 업로드 됩니다. 

여러분은 풀고, 정답과 나름의 이유, 그리고 궁금증을 이 게시판의 댓글로 남겨주세요.

여러분의 영어력에 엄청난 힘이 되리라 믿습니다!!   -W


[댓글 다는법]

1. 정답 4, 주제가 독도는 우리땅이기 때문에 4가 적절하다.

질문: 4번째 문장 I'm a boy에서 'm은 무슨말이죠?





[A+B CLASS]  Day 1 -- Day 2 

[C+E+S CLASS] Day 1 -- Day 2 


좋은문제 풀어보자! (more클릭)


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#READING #Serpens  (0) 2015.09.25

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