1. PX269 Galaxies Part 2: Our Galaxy, the Milky Way 2.1 Components and Structure PX269 Galaxies

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

3. Herschel, 1785 First map of Milky Way: Sun near centre

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

5. Kapteyn, 1922 Star counts with distance scale

6. Globular cluster 47 Tuc, 2MASS Distribution of globular clusters suggests Sun not close to centre

7. Distribution of globular clusters Shapley & Shapley, 1919

8. Wei-Hao Wang University of Hawaii Extinction in plane of Milky Way

9. NGC 891, showing extinction Adam Block

11. Vallee 2002

13. NGC 6744, Milky Way-like galaxy Capella Observatory

14. Wei-Hao Wang University of Hawaii Extinction in plane of Milky Way

15. NGC 891, showing dust extinction Adam Block

16. Interstellar reddening

17. Dust scattering

18. Philip Perkins Pleiades open cluster Scattered light

19. CFHT 2MASS NGC 891 OpticalInfra-red

20. Wei-Hao Wang University of Hawaii

21. COBE/DIRBE near infrared image of whole sky

22. M 51 the Whirlpool Galaxy HII regions

23. Wavelength (Angstroms) Flux Optical spectrum of an HII region Diaz et al 1987

24. Mike Fleenor HII regions: the Orion Nebula

25. COBE/DIRBE near infrared image of whole sky

26. HI map of whole sky

27. 21cm HI map of Milky Way

28. NGC 6744, Milky Way-like galaxy Capella Observatory

29. NGC 6744 in HI Ryder et al 1999

30. Molecular clouds

31. Part 2: Our Galaxy, the Milky Way 2.2 Kinematics

32. Galactic co-ordinates Carroll & Ostlie, 1996

35. HI map of whole sky

36. 21 cm line profile along one line of sight Carroll & Ostlie, 1996

38. 21cm HI map of Milky Way

39. Rotation curve of Milky Way

40. A = rotation curve for centrally-concentrated mass distribution B = rotation curve for extended mass distribution

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

42. Gravitational microlensing method

43. First detection of a gravitational microlensing event Alcock et al 1993