Chapter 15.
The Gates of the Wonder World Open
Victor R. Baker,
Michael H. Carr,
H. H. Kieffer, B. M. Jakosky, C. W. Snyder, and M. S. Matthews, editors,
John Noble Wilford,
Chapter 18.
The Marsh of Camarina
Clark R. Chapman and David Morrison, “Impacts on the Earth by Asteroids and Comets: Assessing the Hazard,”
A. W. Harris, G. Canavan, C. Sagan, and S. J. Ostro, “The Deflection Dilemma: Use vs. Misuse of Technologies for Avoiding Interplanetary Collision Hazards,” in
John S. Lewis and Ruth A. Lewis,
C. Sagan and S. J. Ostro, “Long Range Consequences of Interplanetary Collision Hazards,”
Chapter 19.
Remaking the Planets
J. D. Bernal,
James B. Pollack and Carl Sagan, “Planetary Engineering,” in J. Lewis and M. Matthews, editors,
Chapter 20.
Darkness
Frank Drake and Dava Sobel,
Paul Horowitz and Carl Sagan, “Project META: A Five Year All Sky Narrowband Radio Search for Extraterrestrial Intelligence,”
Thomas R. McDonough,
Carl Sagan,
Chapter 21.
To the Sky!
J. Richard Gott III, “Implications of the Copernican Principle for Our Future Prospects,”
Chapter 22.
Tiptoeing Through the Milky Way
I. A. Crawford, “Interstellar Travel: A Review for Astronomers,”
I. A. Crawford, “Space, World Government, and `The End of History,’
Freeman J. Dyson,
Ben R. Finney and Eric M. Jones, editors,
Francis Fukuyama,
Charles Lindholm,
Eugene F. Mallove and Gregory L. Matloff,
Carl Sagan and Ann Druyan,
1
“As to the fable that there are Antipodes,” wrote St. Augustine in the fifth century, “that is to say, men on the opposite side of the earth, where the sun rises when it sets to us, men who walk with their feet opposite ours, that is on I’ll ground credible.” Even if some unknown landmass is there, and not just ocean, “there was only one pair of original ancestors, and it is inconceivable that such distant regions should have been peopled by Adam’s descendants.”
2
Copernicus’ famous book was first published with an introduction by the theologian Andrew Osiander,