Although Escher did not have mathematical training—his understanding of mathematics was largely visual and intuitive—Escher's work had a strong mathematical component, and more than a few of the worlds which he drew are built around impossible objects such as the Necker cube and the Penrose triang

Escher's work covered a variety of subjects throughout his life. His early love of portraits, Roman and Italian landscapes and of nature, eventually gave wayto regular division of the plane.. Over 150 colorful and recognizable works testify to Escher's ingenuity and vision. He managed to capture the...

Twenty-seven years ago, Sally Ride became the first American woman in
space on Jun 18, 1983. She accomplished this historic milestone when
she flew aboard Space Shuttle Challenger as a mission specialist for
the six-day STS-7 mission. Ride, a southern California native, was also
a mission specia...