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50 Years Ago

Succession of satellites keep eye on Earth

Excerpt from the January 22, 1966 issue of Science News Letter

10:00am, January 12, 2016
Mount Etna

VIEW FROM ABOVE  A plume of gas and ash spill from Mount Etna in this image captured December 3 by the Landsat 8 satellite. A fleet of Earth-monitoring satellites was proposed in 1966; Landsat 8, launched in 2013, is the youngest.

Search for water, oil aided by spacecraft — The secret sources of water, fuel and minerals … may be discovered by using a new tool for geologists — an orbiting spacecraft. Cameras which detect infrared, ultraviolet and visible light and which orbit at a height of 100 or more miles will be an immense aid to geologists mapping the contours … of the Earth’s surface. — Science News Letter, January 22, 1966

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