Curated OER
Educational Technology Clearinghouse: Clip Art Etc: Tycho Brahe
(1546-1601) Danish nobleman best known as an early astronomer, though in his lifetime he was also well known as an astrologer and alchemist.
World History Encyclopedia
World History Encyclopedia: Greek Astronomy
Looks at the history of Greek astronomy from the 4th century BC on, and the major figures who contributed ideas. Includes a timeline of Greek science.