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PX269 Galaxies

Join Dr. Peter Wheatley on an exploration of galaxies, their history, and classification. Dive into the fascinating discoveries made by Galileo Galilei and modern astronomers, including the Milky Way, spiral nebulae, and elliptical galaxies. Learn about the importance of Cepheid variables and the Hertzsprung-Russell Diagram. This book offers a comprehensive introduction to the captivating world of galaxies.

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PX269 Galaxies

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  1. PX269 Galaxies Dr Peter Wheatley p.j.wheatley@warwick.ac.uk Office: PS009

  2. Books £45 £25

  3. Books II £30 £35

  4. Part 1: Introduction1.1 Historical overview

  5. The Milky Way Wei-Hao Wang University of Hawaii

  6. Galileo Galilei 1609

  7. Mountains and craters on the moon

  8. Sunspots

  9. Galileo’s sketch Cassini probe Saturn’s rings

  10. Jupiter’s moons Europa   Io      Ganymede   Callisto Kurt Friedrich

  11. SIDEREAL MESSENGERunfolding great and very wonderful sightsand displaying to the gaze of everyone,but especially philosophers and astronomers,the things that were observed byGALILEO GALILEI,Florentine patricianand public mathematician of the University of Padua,with the help of a spyglass lately devised by him,about the face of the Moon, countless fixed stars,the Milky Way, nebulous stars,but especially aboutfour planetsflying around the star of Jupiter at unequal intervalsand periods with wonderful swiftness;which, unknown by anyone until this day,the first author detected recentlyand decided to nameMEDICEAN STARS The Starry Messenger, Galileo Galilei 1610

  12. Milky Way Wei-Hao Wang University of Hawaii

  13. Wei-Hao Wang University of Hawaii Milky Way and a “spiral nebula”

  14. 1750s Thomas Wright Immanuel Kant

  15. Angular momentum and disc geometries Rich Townsend, UCL

  16. Wei-Hao Wang University of Hawaii

  17. Charles Messier

  18. Andromeda Galaxy = M31 = NGC 224

  19. Andromeda Galaxy = M31 = NGC 224 Lord Rosse 72” telescope 1845

  20. Cepheid variables as standard candles Magnitude Log Period [d] Henrietta Swan Leavitt

  21. 100-inch Mt Wilson telescope Edwin Hubble

  22. Hubble Space Telescope

  23. M 51 the Whirlpool Galaxy

  24. The Milky Way Wei-Hao Wang University of Hawaii

  25. Hubble Deep Field 1,000,000 sec exposure Seeing 100 billion times fainter than human eye… …and half way back to the beginning of time.

  26. Part 1: Introduction 1.2 Galaxy classification

  27. 100-inch Mt Wilson telescope Edwin Hubble

  28. Hubble Space Telescope

  29. M87 an elliptical galaxy CFHT

  30. NGC 2768 an elliptical galaxy

  31. M 51 the Whirlpool Galaxy

  32. NGC 1300 a barred spiral galaxy

  33. Dust extinction in the Sombrero Galaxy = M 104

  34. NGC 1427A a dwarf irregular galaxy

  35. M 51 the Whirlpool Galaxy

  36. Hertzsprung-Russell (HR) Diagram

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