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Thomas Valdez, Chemical Engineer
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January 01, 2001
Asteroid 1998 QE2 to Sail Past Earth Nine Times Larger Than Cruise Ship
Mars Rover Opportunity Examines Clay Clues in Rock
Nine-Year-Old Mars Rover Passes 40-Year-Old Record
Galaxy's Ring of Fire
Cassini Shapes First Global Topographic Map of Titan
NASA Helps Pinpoint Glaciers' Role in Sea Level Rise
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