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This guide provides resources (written and on the web) about the contributions of women to astronomy. It includes sections on over 30 specific women of the past and present, and also a section of general articles and web...
This web page, created by David P. Stern, describes observations that show the earth is a sphere and the history of these observations. The round shape of the Earth may be inferred from the existence of a horizon at sea....
An algebra-based overview of elementary and pre-telescope astronomy. Topics covered include sundials, seasons, calendars, precession, shape and rotation of Earth, Greek astronomy, the path to heliocentric theory and...
This is an historical overview of spaceflight, stressing the technology of rockets, satellites and orbits, and its use in unmanned missions. It contains sections on rocket motion, Robert Goddard, history of rocketry and...
This site discusses important debates that have occurred in the history of astronomy. It begins with a debate on the scale of the universe and continues with the scale of the universe and the nature of the universe. ...
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