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How Big is the Universe? PowerPoint Presentation
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How Big is the Universe?

How Big is the Universe?

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How Big is the Universe?

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  1. 박영동교수 How Big is the Universe?

  2. The Earth a planet(행성)

  3. The Earth A planet Mass: 5.9736 × 1024kg (태양의 0.00030%) Mean radius: 6,371.0 km Chemical composition of the crust

  4. The Solar System 태양, 수성, 금성, 지구, 화성, (세레스),목성, 토성, 천왕성, 해왕성, (명왕성)

  5. Astronomical Units Distance Distance 1 AU = 149,597,870.700 ± 0.003 km ≈ 8.317 light minutes ≈ 499 light-seconds (지구에서 태양까지의 거리) 1 light-second ≈ 0.002 AU 1 light-year = 9.461×1015 m≈ 63,241 AU 1 parsec = 30.857×1015m ≈ 206,265 AU

  6. The Solar System Structure The four gas giants against the Sun: Jupiter, Saturn, Uranus, Neptune (Sizes to scale, distances not to scale)

  7. The Sun Mass: 1.9891×1030 kg(지구의 332,900배) 태양계 전체 질량의 99.86% a Star Volume: 1.412×1018 km3 (지구의 1,300,000 배) composition (by mass) Hydrogen 73.46% Helium 24.85% Oxygen 0.77% Carbon 0.29% Iron 0.16% Sulfur 0.12% Neon 0.12% Nitrogen 0.09% Silicon 0.07% Magnesium 0.05% 태양 자기장의 영향

  8. The MilkyWay(우리은하)

  9. The Universe within 5 million Light Years The Local Group of Galaxies(국부은하군)

  10. Andromeda Galaxy

  11. Within 100 million Light Years: The Virgo Supercluster(처녀자리은하단)

  12. The Universe within 1 billion Light YearsThe NeighbouringSuperclusters

  13. Within 14 billion Light YearsThe Visible Universe

  14. The Size of the observable Universe Diameter ~ 28 billion parsecs (about 93 billion light-years). Volume ~ 3×1080 m3. Stars 3~7 × 1022 stars. Galaxies: ~ 80×109 galaxies. Density 9.9×10−27 kg/m3(5.9 H atoms/m3 in energy). Atoms ~ 1080 atoms.(4.6%만 원자의 형태)