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References 393 18. Michel Mayor and Didier Queloz, “A Jupiter-Mass Companion to a Solar- Type Star,” Nature, Vol. 378 (23 November 1995), 355-359. 19. John MacVey, Interstellar Travel, Past, Present, and Future, New York, Stein and Day, 1977, 12. 20. Tim Appenzeller, “The Search for Other Earths,” National Geographic, December 2004, 73-95; “Everywhere You Turn,” Science, Vol. 307 (7 January 2005), 63; Naeye, “A Bonanza of Exoplanet Discoveries;” Stuart Ross Taylor, “Why Can’t Planets be Like Stars?” Nature, Vol. 430 (29 July 2004), 509. For a periodic update, check the Jet Propulsion Laboratory website called PlanetQuest (http://planetquest.jpl.nasa.gov) the California and Carnegie Planet Search at http://exopanets.org or The Extrasolar Planets Encyclope- dia at www.obspm.fr/planets. You can participate in one form of planetary discovery through a distributed computer program known as Planet Quest, at www.planetquest.org. 21. Kenneth Chang, “Star Is a Near Twin of the Sun, Scientists Say,” The New York Times, 7 January 2004; “Close to Home,” Scientific American, Septem- ber 2003, 36; Ben Bova, Faint Echoes, Distant Stars: The Science and Politics of Finding Life Beyond Earth, New York, Morrow, 2004, 214-228. 22. Ekers, et al., editors, 50; Bova, 220-221, Darling, 107. 23. Dennis Overbye, “It Orbits a Star, but Does It Qualify for Planethood?” The New York Times, 5 April 2005. 24. Dennis Overbye, “Found: Earth’s Distant Cousin (About 15 Light-Years Away),” The New York Times, 14 June 2005; Guy Gugliotta, “Rocky Earth- like Planet Discovered,” The Washington Post, 14 June 2005; Alan MacRob- ert, “A Low-Mass Exoplanet,” Sky and Telescope, September 2005, 19; J.-P. Beaulieu, et al., “Discovery of a Cool Planet of 5.5 Earth Masses Through Gravitational Microlensing,” Nature, Vol. 439 (26 January 2006), 437-440; Didier Queloz, “Light Through a Gravitational Lens,” Nature, Vol. 439 (26 January 2006), 400-401. 25. Artie P. Hatzes and Gunther Wuchterl, “Giant Planet Seeks Nursery Place,” Nature, Vol. 436 (14 July 2005), 182-183. 26. Stephen J. Garber, “Searching for Good Science: The Cancellation of NASA’s SETI Program,” JBIS, Vol. 52 (1999), 3-12. 27. Sullivan, 65. 28. Joanne Baker, “Planetary Orbits Do the Time Warp,” Nature, Vol. 425 (4 September 2003), 34; Govert Schilling, “The Chance of Finding Aliens: Reevaluating the Drake Equation,” Sky and Telescope, December 1998, 36-42. 29. Dennis Overbye, “Hunting for Life in Specks of Cosmic Dust,” The New York Times, 19 July 2005. 30. Charley Lineweaver, “Finding Earths, Life and Intelligence in the Universe,” SETI Institute Explorer, Special Edition 2006, 7, 36 31. David A. Hardy provided a good sampling of artists’ imaginary depictions of alien worlds in Visions of Space, New York, Paper Tiger (Dragon’s World), 1989. Also see Frederick C. Durant and Ron Miller, Worlds Beyond: The Art of Chesley Bonestell, Norfolk, VA, Donning, 1983. 32. P.E. Cleator, “Extraterrestrial Life,” JBIS, Vol. 1 (October 1934), 3-4; Arthur C. Clarke, By Space Possessed, London, Gollancz, 1993, 139-145.