By Clarke, Peter
By Zangger, Eberhard
By Atkinson, Austen
By Sagan, Carl, Agel, Jerome
By Farmelo, Graham
By Piel, Gerard
By Barlow, Connie
By McTaggart, Lynne
By Pickover, Clifford A.
By National Geographic Society
By Skoyles, John, Sagan, Dorion
By Petersen, Carolyn Collins, Brandt, John C.
By Ferguson, Kitty
By Croswell, Ken
By Gratzer, Walter, W. B.
By Brown, Guy
By Adams, Fred
By Stewart, Ian
By Woolfson, Adrian
By Ridley, Matt
By Ferris, Timothy, Fadiman, Clifton
By Cohen, Jack S., Stewart, Ian
By Kitchin, C.R.
By Malone, John
By Altschuler, Daniel R.
By Shapiro, Robert
By Chapman, Allan
By Fairall, Anthony
By Kauffman, Stuart A.