The Evolving Universe

Our Solar System
Our Galaxy
A Universe of Galaxies
The Big Bang
Behind the Science
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Life Cycle of Our Sun

Carina Nebula • NGC 3372
Westerlund 2 star cluster

Cycle image

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Carina Nebula • NGC 3372
Westerlund 2 star cluster

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

Our Galaxy: The Milky Way

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

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

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Background image credit: NASA/CXC/UMass/D. Wang et al.