Photo: Andromeda Galaxy in Ultraviolet

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<strong>Related Gallery:</strong> <a href="http://www.usnews.com/usnews/php/galleries/gallery.php/image-gallery-constellation-nasa-moon-program/59/2/2.html">Constellation, NASA's Moon Program</a>

(Lockheed Martin Corp)

Related Gallery: Constellation, NASA's Moon Program

National Science Foundation

NSF

Hydrogen Gas in the Universe

Researcher believes it is key ingredient to Universe.

Chemistry and Clouds

Researchers look at water droplets and chemical reactions.

Learning and Play

Researcher studies children's unstructured playtime.

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Science Discoveries

Science Discoveries

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