Notes for chapter

1. Crommelin (1917) p 376

2. Biographical details such as these are from Christianson (1995) unless otherwise noted

3. The visibility of planets can be checked at <www.skyviewcafe.com>

4. Quoted in Christianson (1995) p 31

5. Edwin's feelings about his father are quoted in Christianson (1995) p 15

7. Christianson (1995) p 67

8. Christianson (1995) p 109

9. Mayall (1970) pp 188-189

10. Burbidge (1994) p 23

11. Christianson (1995) p 153. Note that Christianson gives the date of the 1922 meeting as July, not May. The Commission on Nebulae is now known as the Commission on Galaxies. The International Research Council became the International Council of Scientific Unions in 1931

12. Hubble (1922) pp 162-199

13. Barnard (1913) p 500

20. Hart and Berendzen (1971) p 112

22. E Hubble to H Shapley, 19 February 1924, quoted in Smith (1982) p 141

23. Quoted in Christianson (1995) p 22

24. Hart and Berendzen (1971) p 114

25. Exchange is quoted in Smith (1982) pp 118-119

26. Quoted in Smith (1982) p 141

27. Quoted in Christianson (1995) p 161 29. Quoted in Smith (1982) p 120

29. Quoted in Berendzen and Hoskin (1971) p 8

30. Christianson (1995) p 161

38. Trimble (1996) p 1076

39. Christianson (1995) p 188

40. Hubble (1929)

44. Lemaitre (1931) p 406

45. Lemaitre (1931) p 408

46. Lemaitre (1931) p 410

48. Christianson (1995) p 347

49. Christianson (1995) p 350

51. Christianson (1995) p 233

52. Christianson (1995) p 246

57. Christianson (1995) pp 254, 306

60. Time Magazine, 9 February 1948, p 56

61. Sandage (1989) p 352

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