This tutorial traces the history of the telescope, beginning with Galileo's first small refractor, to the era of orbiting space telescopes. Topics include Galileo's trouble with the church over the observations he made...
This article describes major earthquakes that have occurred in California since the colonial era, beginning with a 1769 earthquake experienced by a Spanish expedition near what is now Los Angeles, and ending with the...
Learn more about the historic voyage of the H.M.S. Challenger. Scientists from all disciplines set out on December 21, 1872 for a four year research cruise to map the sea and its contents. This voyage paved the way for...
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