Red Shift, Blue Shift
Students demonstrate how stellar spectra measures a star's motion relative to Earth along the line of sight.
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Stars, Galaxies and the Universe
It takes 225 million years for our sun to travel around the galaxy. The presentation covers astronomical units, light years, telescopes, types of stars, the life cycle of a star, and types of galaxies. This is the last lesson in a...
7th - 8th Science CCSS: Adaptable
Is There a Center of the Universe?
The history of our understanding of the center of the universe is explored through this film. The ideas of Aristotle, Copernicus, Bruno, Descartes, and Herschel are included, as well as the new discoveries that have helped the theories...
4 mins 6th - 12th Science CCSS: Adaptable
Red Shift: Measuring Distance in Space
Learn about gamma rays and red shift, what they are, what they mean, and how scientists use them to measure distances between objects in space. This clip explains how important red shifted gamma rays are to science and how illusive they...
4 mins 7th - 12th Science