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All of the material that we see in the Universe - planets, stars, galaxies and dust - add up to about 4% of known matter. Astronomers believe that rest is made up of dark matter and dark energy. |
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Silhouetted against the peaks and ridges of the majestic Santa Catalina
Mountains, The Biosphere 2 Center is a $200 million facility on 250 acres of
beautiful desert. |
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Flandrau
Science Center is beginning its transition to
the new University of Arizona Science Center,
to open in Downtown Tucson in 2009. |
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The
world's largest collection of optical telescopes is
located high above the Sonoran Desert. |
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For
over 25 years, millions have visited the world's fastest growing aerospace museum
Now it's your turn to take flight. |
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The
only ICBM site in the world with a Titan II missile
in the launch silo, this complex provides both above
ground and underground exhibits depicting the Cold
War era. |
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