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13 photos from NASA's most powerful X-ray space telescope reveal the invisible universe
Business Insider via Yahoo Canada News· 7 hours agoChandra's best images show how it reveals details that other telescopes can't see. NASA has been...
How The Pythagorean Theorem Helps Solve a Right Triangle
HowStuffWorks via Yahoo Canada News· 12 hours agoThe Pythagorean theorem, which explains how to calculate the longest side of a right-angled triangle, is an ancient mathematical statement that still buttresses modern-day construction, aviation and even how we navigate through traffic.