It hasn't been that long since the first images of Earth were taken from space. A V-2 rocket launched from the White Sands Proving Ground near Alamogordo, New Mexico, and equipped with a movie camera captured grainy black-and-white images of our planet on October 24, 1946. Just 60 years later, a technique called remote sensing enables the average person to search the Internet for crystal-clear images of his own house, taken by satellites orbiting miles above Earth.
展开▼
