13. ENVS 112L 09-07-10, 09-11-10 - Cosmology

16. from http://www.ras.org.uk/html/library/rare.html

18. from: http://astrosun.tn.cornell.edu/courses/astro201/retrograde.htm

20. http://fuse.pha.jhu.edu/wpb/n66fig1.png

21. http://virtualfieldtrip.jpl.nasa.gov/smmk/jpl/orionNebula

22. Protoplanetary Disks in Orion Nebula from: http://antwrp.gsfc.nasa.gov/apod/ap961207.html

23. Auriga Accretionary Disk from: http://antwrp.gsfc.nasa.gov/apod/ap030208.html

24. Planets forming around HR 4796A from: http://antwrp.gsfc.nasa.gov/apod/ap990205.html

25. from: http://antwrp.gsfc.nasa.gov/apod/ap990326.html

26. from: http://antwrp.gsfc.nasa.gov/apod/ap990901.html

27. from : http://antwrp.gsfc.nasa.gov/apod/image/0003/spherule_apollo11.jpg

29. Why does sun not collapse?

36. Image: NASA

40. http://www.jpl.nasa.gov/history/art/1991/asteroid_gaspra.jpg

41. Image: NASA

42. Some of Jupiter’s Moons

43. Saturn Image: NASA

46. Neptune Image: NASA

47. Recently demoted: Pluto and Charon Image: NASA