Satellite Imaging Pioneer Virginia Norwood Passes Away at 96.

Virginia Norwood, an aerospace pioneer and physicist, has died at the age of 96. She invented the multispectral scanner system (M.S.S.) that made it possible to map and study the earth from space, which has been used for more than 50 years by the United States Geological Survey's Landsat satellite program. The program has provided powerful visual evidence of climate change, deforestation, and other shifts affecting the planet's well-being. Ms. Norwood oversaw the development of Landsat 2, 3, 4, and 5, and her original concept has been the basis for each generation satellite.