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World's Lightest Solid!
Adults Construction Media Science Physics Space ... Aerogels are the world's lightest (least dense) solids. They are also excellent thermal insulators and have been used in numerous Mars missions and the Stardust comet particle-return mission.
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What Can The Most Powerful Satellites Really Do?
Adults Science Space Technology How powerful are satellites up in space right now? What can they do to help us on Earth?