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Become a nitrogen atom in the nitrogen cycle in our Traveling Nitrogen Classroom Activity Kit/Game. See all our games, activity kits and classroom activities.
This is an artist's picture of the Harvard Observatory placed on the background of a bunch of novae. Novae are the stars that Fleming discovered.
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Williamina Fleming

Williamina Paton Stevens Fleming was a Scottish-American astronomer who lived from 1857-1911. She discovered 10 of the 24 novae then known. Novae are stars that suddenly become very bright then fade over a period of a few months or years. She also discovered over 200 variable stars. Variable stars are those that change in brightness over time.

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF