| A Brief SETI Chronology | | A timeline of the search for extraterrestrial intelligence, from Morrison and Coconni to SETI@home. |
| Astronomy | | Features history of discoveries and references. |
| Astronomy in Japan | | Historical and modern Japanese astronomy, and its place in Japanese culture |
| Astronomy in the 18th Century | | Discusses the development of reflective telescopes during the 1700's. Covers the different types of mirrors and lens that were used during these times. Includes some key contributors to the improvement of the telescope during this period. |
| Atlas Celeste | | A rare celestial atlas discovered in the library of the Manchester Astronomical Society. |
| From Stargazers to Starships | | Tutorial/historical exposition of the motion of Earth in space, Newtonian mechanics and spaceflight, on a high school level. |
| Harmonia Macrocosmica by Andreas Cellarius | | Atlas of the heavens as seen by the astronomers of the time of its 1661 printing: Copernicus, Ptolemy, Brahe, and Aratus. Entire book has been digitized and the images may be browsed or searched. |
| HASTRO-L | | Archive of the History of Astronomy Discussion Group, the mailing list for scholars in this field. |
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