8. D.C. Jewitt, J.X. Luu, and J. Chen, “The Mauna Kea-Cerro Tololo (MKCT) Kuiper Belt and Centaur Survey,” Astronomical Journal 112:1225, 1996.

9. J. Luu and D.C. Jewitt, “Color Diversity Among the Centaurs and Kuiper Belt Objects,” Astronomical Journal 112:2310, 1996.

10. M.J. Duncan, H.F. Levison, and S.M. Budd, “The Dynamical Structure of the Kuiper Belt,” Astronomical Journal 110:3073, 1995.

11. D.C. Jewitt and J.X. Luu, “Discovery of Candidate Kuiper Belt Object 1992 QB1,” Nature 362:730, 1993.

12. See the Minor Planet Center home page on the World Wide Web for an updated list: <http://cfa-www.harvard.edu/iau/lists/TNOs.html>.

13. J. Luu and D.C. Jewitt, “Color Diversity Among the Centaurs and Kuiper Belt Objects,” Astronomical Journal 112:2310, 1996.

14. J. Luu and D.C. Jewitt, “Color Diversity Among the Centaurs and Kuiper Belt Objects,” Astronomical Journal 112:2310, 1996.

15. For a recent review of the Kuiper Belt see, for example, P. Weissmann, “The Kuiper Belt,” Annual Reviews of Astronomy and Astrophysics 33:327, 1995.

16. P. Weissman and H.F. Levison, “The Population of the Trans-Neptunian Region: The Pluto-Charon Environment,” Pluto and Charon, S.A. Stern and D.J. Tholen, eds., University of Arizona Press, Tucson, Arizona, 1997, p. 559.

17. For a recent review of the Kuiper Belt see, for example, P. Weissmann, “The Kuiper Belt,” Annual Reviews of Astronomy and Astrophysics 33:327, 1995.

18. P. Weissman and H.F. Levison, “The Population of the Trans-Neptunian Region: The Pluto-Charon Environment,” Pluto and Charon, S.A. Stern and D.J. Tholen, eds., University of Arizona Press, Tucson, Arizona, 1997, p. 559.

19. D.C. Jewitt, J.X. Luu, and J. Chen, “The Mauna Kea-Cerro-Tololo (MKCT) Kuiper Belt and Centaur Survey,” Astronomical Journal 112:1225, 1996.

20. D.P. Cruikshank, ed., Neptune and Triton, University of Arizona Press, Tucson, Arizona, 1995.

21. J.I. Lunine, “Primitive Bodies” in The Formation and Evolution of Planetary Systems, H.A. Weaver and L. Douly, eds., Space Telescope Science Institute Symposium, Cambridge University Press, 1989.

22. J. Luu and D.C. Jewitt, “Color Diversity Among the Centaurs and Kuiper Belt Objects,” Astronomical Journal 112:2310, 1996.

23. For a recent review of the Kuiper Belt see, for example, P. Weissmann, “The Kuiper Belt,” Annual Reviews of Astronomy and Astrophysics 33:327, 1995.

24. P. Weissman and H.F. Levison, “The Population of the Trans-Neptunian Region: The Pluto-Charon Environment,” Pluto and Charon, S.A. Stern and D.J. Tholen, eds., University of Arizona Press, Tucson, Arizona, 1997, p. 559.

25. D.C. Jewitt, J.X. Luu, and J. Chen, “The Mauna Kea-Cerro-Tololo (MKCT) Kuiper Belt and Centaur Survey,” Astronomical Journal 112:1225, 1996.

26. P. Weissman and H.F. Levison, “The Population of the Trans-Neptunian Region: The Pluto-Charon Environment,” Pluto and Charon, S.A. Stern and D.J. Tholen, eds., University of Arizona Press, Tucson, Arizona, 1997, p. 559.

27. G. Schubert, T. Spohn, and R.T. Reynolds, “Thermal Histories, Compositions and Internal Structures of the Moons of the Solar System,” in Satellites, J.A. Burns and M.S. Mathews, eds., University of Arizona Press, Tucson, Arizona, 1986.

28. J. Luu and D.C. Jewitt, “Color Diversity Among the Centaurs and Kuiper Belt Objects,” Astronomical Journal 112:2310, 1996.

29. K. Oikawa and E. Everhart, “Past and Future Orbit of 1977 UB, Object Chiron,” Astronomical Journal 84:134, 1979.

30. R.V. Yelle et al., “Lower Atmospheric Structure and Surface-Atmosphere Interactions on Triton,” Neptune and Triton, D.P. Cruikshank, ed., University of Arizona Press, Tucson, Arizona, 1995, p. 1060.

31. R.V. Yelle and J.L. Elliot, “Atmospheric Structure and Composition: Pluto and Charon,” Pluto and Charon, S.A. Stern and D.J. Tholen, eds., University of Arizona Press, Tucson, Arizona, 1997, p. 347.

32. K. Meech et al., “Observations of Structures in the Inner Coma of Chiron with the HST Planetary Camera,” Astronomical Journal 113:844, 1997.

33. P. Artymowicz, “Beta Pictoris: An Early Solar System?,” Annual Reviews of Earth and Planetary Sciences 25:175, 1997.

34. For a review of the technological requirements for the detection of extrasolar planets, see, for example, “Exploration of Neighboring Planetary Systems (ExNPS) Team,” A Road Map for the Exploration of Neighboring Planetary Systems, JPL-96-22, C.A. Beichman, ed., Jet Propulsion Laboratory , Pasadena, California, 1996.

35. For a discussion of the relationship between the Kuiper Belt and protostellar and stellar disks see, for example, P.R. Weissman, “The Kuiper Belt,” Annual Reviews of Astronomy and Astrophysics 33:327, 1995.

36. Astrobiology Workshop Preliminary Report, D. DeVincenzi, ed., NASA Ames Research Center, Moffett Field, California, 1996.

37. R.O. Pepin, “Origin of Noble Gases in the Terrestrial Planets,” Annual Reviews of Earth and Planetary Sciences 20:389–430, 1992.

Front Matter (R1-R12)

Executive Summary (1-6)

1 The New Worlds Beyond 30 AU (7-17)

2 Current Knowledge and Outstanding Issues (18-29)

3 Key Measurement Objectives (30-35)

4 Technology Issues (36-41)

5 Conclusions and Recommendations (42-45)

Glossary (46-48)

Plates 1-4 (49-52)