The Evolving Universe

Our Solar System
Our Galaxy
A Universe of Galaxies
The Big Bang
Behind the Science
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Our Galaxy: The Milky Way

A Star is Born
The Life of a Star
Star Death
Our Galaxy

Life Cycle of Our Sun

The Life of a Star
Westerlund 2 star cluster

Cycle image

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The Life of a Star
Westerlund 2 star cluster

Did You Know?

Behind the Science:
How do we know about our Sun's early history as a protostar?

Related Exhibit

The Dynamic Earth Website

Learn more about our solar system. Visit the National Museum of Natural History's Hall of Geology, Gems, and Minerals or The Dynamic Earth website.

The Evolving Universe is a joint project of the Smithsonian National Museum of Natural History and the Smithsonian Astrophysical Observatory

© 2011 Smithsonian Institution
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Background image credit: NASA/CXC/UMass/D. Wang et al.