This project, authored by the Sloan Digital Sky Survey (SDSS), shows the user the importance of a color-color diagram, which allows to identify a star as a thermal source or not. First it establishes a theoretical...
Created by Tom Henderson of Physics Classroom.com, this resource offers comprehensive background information on the nature of lenses and their refractive properties. Accompanying ray diagrams provide valuable tools for...
This site provided by National Aeronautics and Space Administration contains an introduction to X-rays and their uses in medicine and astronomy. Descriptions of the first X-ray observations, how they are used to...
This website, containing information from the Sloan Digital Sky Survey, provides projects and activities for advanced astronomy students. In this particular one, the user retraces Edwin Hubble's steps to discover that...
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