Solar System
Links
Asteroid Discovery Circumstances
http://ssd.jpl.nasa.gov/dc_home.html
For each minor planet: Where and when found, and by whom.
Exploring the Moon
Timeline of Lunar exploration.
Exploring The Planets-Discovery
http://www.nasm.si.edu/ceps/etp/discovery/etpdiscovery.html
The five known in antiquity, three more since the telescope, and Ceres.
Is Mars Habitable?
http://www.wku.edu/~smithch/wallace/S730.htm
A. R. Wallace's 1907 critique of Lowell's Book "Mars and Its Canals"
Neptune and Pluto
http://www-groups.dcs.st-and.ac.uk/~history/HistTopics/Neptune_and_Pluto.html
Mathematical discovery of planets
Neptune's Discovery
http://www.astronomy.com/Content/Dynamic/Articles/000/000/000/119ipise.asp
Article in Astronomy Magazine.
Notes on Sunspot Observations
http://www.oclc.org/pdemo/kg/p012.htm
John Winthrop's 1739 notes, from the collected papers of Fredrick Kilgour.
Orbits and Gravitation
http://www-groups.dcs.st-and.ac.uk/~history/HistTopics/Orbits.html
The development of the mathematics of planetary motion.
The Face of the Moon
http://www.lindahall.org/events_exhib/exhibit/ex_face_moon.shtml
A catalog for an exhibition of rare books and maps. Includes sample pictures from Galileo to the Apollo missions.
The Struggles to Find the Ninth Planet
http://perso.wanadoo.fr/olivier.granier/meca/vulga/pluton/pluton.htm
A paper by Clyde Tombaugh relating his discovery of Pluto.