1. p view has …Earth expanded …observer at Chicago (near 45 deg. North latitude) …observer upright

2. view has …Earth expanded …observer at Chicago (near 45 deg. North latitude) …observer upright

3. View has… …cel. sph. upright …observer at 45° N latitude

4. view has …Earth expanded. …observer at Chicago (near 45 deg. North latitude) …observer upright

5. views have …Earth expanded. …observer at N. Pole (left), Chicago (center), equator (right) …observer upright

7. David Chuss NASA - Goddard Jill Prince NASA - Langley Hua-bai Li Harvard Megan Krejny U. Minnesota

8. winter-over scientist Greg Griffin, transferring liquid Helium into N.U.’s SPARO camera during the Antarctic winter of 2000

9. Photograph of Earth and Moon – taken by a departing Mars probe

10. A Solar eclipse (total)

11. A Solar eclipse (annular type)

12. A Lunar eclipse (total)