Click on a project name or image to select a project.
Hubble Diagram
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Retrace the steps of astronomers like Edwin Hubble in the 1920s, as they slowly began to realize we live in an expanding universe.
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Color
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Look up at the sky – what do you see? If you’re near a city, you may see a few bright white stars. But you’re not really seeing the full story of the sky – stars come in a dazzling array of colors, from bright blue to white to deep red. In this project, you’ll see stars of all colors, and you’ll learn what causes the color of a star.
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Spectral Types
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How do astronomers make sense of the millions of stars they see? In this project, you will learn by classifying the stars yourself.
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Hertzsprung-Russell Diagram
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Learn how astronomers study the lives and times of stars, which live for millions or billions of years.
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Galaxies
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How do astronomers study galaxies, which can be millions or billions of light-years away – so far away that most just look like fuzzy patches of light? In the Galaxies project, you will learn by examining galaxies yourself.
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Sky Surveys
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Learn about how astronomers map the sky, from ancient times to today’s cutting edge technology.
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Quasars
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Learn about quasars, the most distant and mysterious objects in the universe.
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