Quantum theory and Einstein's theory of general relativity are two of the greatest successes in modern physics. Each works extremely well in its own domain: Quantum theory explains how atoms and ...
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Mr. Chairman and members of the Science Committee: Thank you for the invitation to come before you and participate in this hearing on the Future of Human Space Flight. I am honored by your request.
CHATFIELD — The day’s lesson in Nora Gathje’s physical science class was gravity. Students were given sheets to record observations, balls of various size and weights. The students dropped, bounced, ...