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View Resource Spectral Types

This website, containing information from the Sloan Digital Sky Survey, provides projects and activities for advanced astronomy students. In this section students find the wavelengths emitted by electron transitions between energy levels in various elements. They will also learn about how astronomers classify stars according to the spectral star sequence: O B A F G K M. There also contains a...

View Resource Decoding Cosmic Spectra

This site from NOVA and PBS provides a simulation of the identification of elements in a star, a nebula, a planet, and a galaxy. The interactive resource allows a user to match individual spectral lines of seven elements to lines in the observed spectrum of each object.

View Resource Multiwavelength Astronomy

Visitors can read and view imagery that explains how additional information can be revealed about celestial objects when they are imaged in multiple wavelengths or in wavelengths outside the visible range. Using the example of the Crab Nebula, this description shows that radio, ultraviolet, and X-ray astronomy reveal additional details of its structure and composition when compared with optical...

View Resource Multiwavelength Astronomy

This site from NASA\'s Infrared Astrophysics Data Center explains how the universe can be observed using the entire electromagnetic spectrum. There is an introduction to using light in astronomy; information on and images taken from different areas of the electromagnetic spectrum of objects in the solar system, the Milky Way galaxy and beyond; and a table of radiation types, their characteristic...

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