Virginia Norwood, an aerospace pioneer who invented the scanner that has been used to map and study the earth from space for more than 50 years, has died at her home in Topanga, Calif. She was 96. The New York Times reports: Her death was announced by the United States Geological Survey, whose Landsat satellite program relies on her invention. Her daughter, Naomi Norwood, said her mother was found dead in her bed on the morning of March 27. The Landsat satellites, speeding 438 miles above the surface, orbit the earth every 99 minutes and have captured a complete image of the planet every 16 days since 1972. These images have provided powerful visual evidence of climate change, deforestation and other shifts affecting the planet’s well-being.
Ms. Norwood, a physicist, was the person primarily responsible for designing and championing the scanner that made the program possible. NASA has called her “the mother of Landsat.” At the dawn of the era of space exploration in the 1950s and ’60s, she was working at Hughes Aircraft Company developing instruments. One of a small group of women in a male-dominated industry, she stood out more for her acumen. “She said, ‘I was kind of known as the person who could solve impossible problems,'” Naomi Norwood told NASA for a video on its website. “So people would bring things to her, even pieces of other projects.” […]
Over the next 50 years, new Landsat satellites replaced earlier ones. Ms. Norwood oversaw the development of Landsat 2, 3, 4 and 5. Currently, Landsat 8 and 9 are orbiting the earth, and NASA plans to launch Landsat 10 in 2030. Each generation satellite has added more imaging capabilities, but always based on Ms. Norwood’s original concept. The Landsat program has mapped changes in the planet brought on by climate change and by human actions. They include the near disappearance of the Aral Sea between Kazakhstan and Uzbekistan, the shrinking of the Great Salt Lake in Utah, the evolving shape of the Mississippi Delta, and the deforestation and increasing agricultural use of land in Turkey and Brazil.
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