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The Smithsonian Astrophysical Observatory (SAO) is a "research institute" of the Smithsonian Institution. It is joined with the Harvard College Observatory (HCO) to form the Harvard-Smithsonian Center for Astrophysics (CfA). Because these research activities share Harvard and Smithsonian staff and resources, the links at this website will take you to information posted on the "CfA" pages.
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Weekly Science Updates
May 18, 2012Galaxies in the Young CosmosThe universe was born about 13.7 billion years ago in the big bang. The Sun and its system of planets formed about five billion years ago. What happened, then, during that long, intervening stretch of nearly nine
billion years? Read More...
May 11, 2012Capturing PlanetsThe discovery of planets around other stars has led to the realization that alien solar systems often have bizarre features - at least they seem bizarre to us because they were so unexpected. Read More...
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| Our Solar System | Stars, Planets & Origins | |
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| Galaxies | Cosmology | |
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| Laboratory Astrophysics | Extreme Astrophysics |
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