A Brief SETI Chronology
   A timeline of the search for extraterrestrial intelligence, from Morrison and Coconni to SETI@home.
   http://www.setileague.org/general/history.htm

A Science Odyssey - Physics and Astronomy
   PBS articles about 20th century astronomy and physics.
   http://www.pbs.org/wgbh/aso/databank/physastro.html

Astronomical References in the Ruba'iyât of Omar Khayyam
   Excerpts and commentary with reproductions of some of Elihu Vedder's illustrations.
   http://www.minaret.org/INSAP3.htm

Astronomy
   Features history of discoveries and references.
   http://jacq.istos.com.au/sundry/astro.html

Astronomy in Japan
   Historical and modern Japanese astronomy, and its place in Japanese culture
   http://www2.gol.com/users/stever/jastro.html

Astronomy in Sweden 1860-1940
   From the Uppsala University Newsletter for History of Science.
   http://www.astro.uu.se/history/swehistory_1860-1940.html

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.
   http://www.cosmicelk.co.uk/astronomy18c.htm

Atlas Celeste
   A rare celestial atlas discovered in the library of the Manchester Astronomical Society.
   http://www.mikeoates.org/mas/bevis/home.htm

Biennial History of Astronomy Conferences
   Workshops at Notre Dame, papers presented, abstracts, group pictures of attendees.
   http://www.nd.edu/~histast4/index.html

Big Ear Radio Observatory
   Radio astronomy and the search for extraterrestrial intelligence.
   http://www.bigear.org/

Digital Archive of Historical Astronomy Pictures
   Images from the history of astronomy, old telescopes, pictures of astronomers, observatories.
   http://www42.pair.com/infolund/bolaget/DAHAP/

Electronic Newsletter for the History of Astronomy
   Complete archive and subscription information.
   http://www.astro.uni-bonn.de/~pbrosche/aa/enha/

Fabri de Peiresc's Quest for a Method to Calculate Terrestrial Longitude
   Article by Jane T. Tolbert in the Historian publication in 1999. Whereas Galileo sought to confront and embarrass the established Church, Peiresc worked from within clerical ranks with persuasion and tact.
   http://www.findarticles.com/cf_0/m2082/4_61/56909071/p1/article.jhtml

From Stargazers to Starships
   Tutorial/historical exposition of the motion of Earth in space, Newtonian mechanics and spaceflight, on a high school level.
   http://www.phy6.org/stargaze/Sintro.htm

Gene Smith's Brief History of Astronomy
   Covers the development of this ancient science from days of Stonehenge (3100 BC) to the discovery of Pulsars (1968 AD). Includes related resource links.
   http://cassfos02.ucsd.edu/public/tutorial/History.html

HASTRO-L
   Archive of the History of Astronomy Discussion Group, the mailing list for scholars in this field.
   http://listserv.wvu.edu/archives/hastro-l.html

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.
   http://www.lib.utah.edu/digital/cellarius.html

Heavenly Mathematics: Cultural Astronomy
   An interdisciplinary course on cultural astronomy.
   http://www.math.nus.edu.sg/aslaksen/teaching/heavenly.html

Hindu Cosmological Time Cycles
   An accurate calendar and the progenitor of the sexagesimal (base 60) "degree, minutes, seconds" measurement system.
   http://www.aaronsrod.com/time-cycles/index.html

Historiacoelestis
   Yahoo group moderated by Stuart Williams, F.R.A.S.
   http://groups.yahoo.com/group/historiacoelestis/

Historical Astronomy Division
   American Astronomical Society division devoted to history, with a link to pages on the history of the society itself.
   http://www.aas.org/~had/had.html

History and Philosophy of Western Astronomy
   The History chapter of an introductory astronomy course.
   http://www.astronomynotes.com/history/s1.htm

History of Astronomy
   Offers a history of the field and science. Features links to related sites, awards and contact details. Provided by the Working Group for the History of Astronomy.
   http://www.astro.uni-bonn.de/~pbrosche/astoria.html

History of Astronomy Pages
   Frederik Kaiser (1808-1872) and the professionalisation of Dutch astronomy; The "Lost Letters" of J.C. Kapteyn (1851-1922); Many history of astronomy and history of science links with a Dutch flavour.
   http://www.strw.leidenuniv.nl/~heijden/history.html

History of Astronomy in Ancient India
   Eclipse calculation, heliocentric theory, size of the world.
   http://india.coolatlanta.com/GreatPages/sudheer/astro.html

History of SETI
   An overview of the history of the search for extraterrestrial intelligence using radio frequencies. Includes photos.
   http://www.seti-inst.edu/seti/seti_background/Welcome.html

Islamic Astronomy
   Article by Owen Gingerich explores refinement and criticism of Ptolemaic astronomy, including religious influences on direction, and describes precursors to and influences on Copernicus.
   http://users.kfupm.edu.sa/phys/alshukri/PHYS215/Islamic%20astronomy.htm

Jewish Astronomy, From Ancient to Modern Times
   Astronomy in Israel from Og's Circle to the Wise Observatory.
   http://wise-obs.tau.ac.il/judaism/jewish_astro.html

Little Green Men, White Dwarfs or Pulsars?
   A personal account by Jocelyn Bell Burnell on the discovery of pulsars.
   http://www.bigear.org/vol1no1/burnell.htm

MuslimHeritage.com - Astronomy
   Articles on astronomers, observatories, work performed and its significance from the ninth to the fifteenth centuries.
   http://www.muslimheritage.com/topics/default.cfm?TaxonomyTypeID=18&TaxonomySubTypeID=107

Northern California History of Astronomy Luncheon and Discussion Association
   Announcements of discussions (in Oakland, California), open to the public, on various astronomy history topics, and an archive of past discussions
   http://nchalada.org/

Out of This World
   Exhibition catalog for The Golden Age of the Celestial Atlas. Includes an historical essay and sample pictures.
   http://www.lindahall.org/events_exhib/exhibit/ex_atlas.shtml

Roemer and the First Determination of the Velocity of Light
   Burndy Library online publication of 1940 article detailing the background and details of Roemer's work.
   http://dibinst.mit.edu/BURNDY/OnlinePubs/Roemer/index.html

Rundetaarn (The Round Tower)
   Astronomy in Denmark: Brahe, Roemer, Hertzsprung.
   http://www.rundetaarn.dk/engelsk/observatorium/history.htm

Russell A. Hulse - Nobel Lecture
   The discovery of the binary pulsar.
   http://www.nobel.se/physics/laureates/1993/hulse-lecture.html

Starry Messenger
   Phase I of the Electronic History of Astronomy, developed in the Whipple Museum of the History of Science at Trinity College, Cambridge. Covers the history of instruments and techniques, themes such as astrology and calendar reform, and biographies of maj
   http://www.hps.cam.ac.uk/starry/starrymessenger.html

The Babylonian Theory of the Planets
   A substantial look at the subject, and a review of N. M. Swerdlow's book.
   http://www.maa.org/reviews/babplanets.html

The Cosmic Microwave Background Radiation
   Robert Woodrow Wilson Nobel Lecture.
   http://www.nobel.se/physics/laureates/1978/wilson-lecture.html

The Manchester Astronomical Society History
   The first hundred years, list of presidents, list of archived documents.
   http://www.mikeoates.org/mas/history.htm

The Society For The History Of Astronomy
   Academic and popular topics, with a focus on Britain.
   http://www.shastro.org.uk/

The Star of Bethlehem
   An investigation of the science and history which bear on the mysterious star said to have accompanied the advent of Christ.
   http://www.bethlehemstar.net/

The Àryabhatíya of Àryabhata
   The oldest exact astronomic constant? The ratio of earth rotations to lunar orbits in Aryabhata's AD 498 writing.
   http://www.jqjacobs.net/astro/aryabhata.html

This Month in the History of Astronomy
   Short descriptions of important discoveries, events, and birthdays sorted by month.
   http://astro.martianbachelor.com/TMITHOA/

Tycho's Star Maps
   Celestial atlases and globes on exhibit at the Royal Observatory, Greenwich.
   http://www.nmm.ac.uk/server.php?request=setTemplate:singlecontent&contentTypeA=conWebDoc&contentId=388

Understanding Tidal Friction
   Article by Peter Brosche on gaining understanding of changes in the Moon's orbit.
   http://www.tribunes.com/tribune/art98/bros.htm

X-ray Astronomy at Goddard
   Describes observations using balloons, rockets and satellites.
   http://lhea.gsfc.nasa.gov/docs/xray/history.html