This activity introduces students to the concepts of the redshift of a receding star. Students will learn about the properties of light, the Doppler effect, and also about Hubble's discovery of the expansion of the...
This activity asks students to analyze both the light curve from a pulsar in the crab nebula and the Fourier Transform of the light curve. From this students must find the period of the light intensity, determine the...
This site describes soft gamma repeaters. The author, Robert C. Duncan of the University of Texas at Austin, explains how these strange, physically-extreme stars form, and why they emit steadily pulsating X-rays with...
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