The first image of the Keyhole structure was acquired by the Mars Reconnaissance Orbiter (MRO) HiRISE spacecraft in November with its smaller context camera (CTX). The image P14_006672_1836_XN_03N267W ...
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Two American Teenage Girls May Have Cracked a 2,000-Year-Old Math Puzzle With a Stunning New Pythagoras Proof
For over two millennia, mathematicians agreed on one thing: you can’t use trigonometry to prove Pythagoras’ Theorem—because trigonometry is built on it. That logic, drilled into students and scholars ...
You've just picked up a ground ball at first base, and you see the other team's player running towards third base. How far do you have to throw the ball to get it from first base to third base, and ...
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