Adler Planetarium and Astronomy Museum
Interprets the exploration of the Universe for the broadest possible audience and hosts one of the finest collections of early astronomical instruments in the world.
www.adlerplanetarium.org
Shapley - Curtis Debate in 1920
Guide to understanding all facets of the Great Debate between Harlow Shapley and Heber D. Curtis over the scale of the universe. Includes a complete transcript.
antwrp.gsfc.nasa.gov/diamond_jubilee/debate_1920.html
Celestial Atlas (1826)
By Franz Niklaus König.
www.stub.unibe.ch/stub/koenig/celestial.html
Historical Celestial Atlases on the Web
Digital editions of various celestial atlases and maps from the middle of the 15th century to the early 20th century.
www.phys.uu.nl/~vgent/celestia/celestia.htm
History of High-Energy Astrophysics
A list of many important dates in the history of high-energy astrophysics and astronomy in general, with links to further details.
guinan.gsfc.nasa.gov/docs/heasarc/headates/heahistory.html
Discovery of the Perseid Meteors
Article from Sky & Telescope magazine on Edward C. Herrick's discovery of the Perseids in 1837.
skyandtelescope.com/observing/objects/meteors/article_124_1.asp
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