The last human's view from the surface of the Moon so far: a post EVA-3 window pan by Jack Schmitt, Apollo 17, taken 49 years ago #Todaygo.nasa.gov/2gLet2C
The last time we walked on the Moon. Portraits of Gene Cernan and Jack Schmitt onboard the lunar module Challenger before lift off, 49 years ago #Todaygo.nasa.gov/2gLet2C#Apollo17
This is the Apollo 17 lunar module Challenger during its lift off from the lunar soil, happening 49 years ago #Todaybit.ly/2hu0csf
You can cleary see Gene Cernan in the Apollo 17 Lunar Module window, in this picture taken during the LM-CSM docking process, 49 years ago #Todaygo.nasa.gov/2gLVHIf
An Earthrise from the Moon orbit, once the Apollo 17 crew reunited on the Command and Service Module America, 49 years ago #Todaygo.nasa.gov/2AI33rV
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Born 400 years ago #Today, Blaise Pascal was child prodigy, mathematician, physicist, inventor, writer and Catholic theologian. He was pioneer in the natural and applied sciences and invented one of the first mechanical calculators
Pascal designed and built one of the earliest mechanical calculators, known as Pascal's Calculator or Pascaline. It was a pioneering device that used gears and wheels to perform addition and subtraction. It laid the foundation for mechanical computation
He introduced the namesake Triangle, a triangular arrangement of numbers with various mathematical properties. Each number in the triangle is the sum of the two numbers directly above it.