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The ?ryabhat?ya of ?ryabhata
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 |
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/ |
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 |
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