Located near Arecibo, Puerto Rico, the Arecibo Observatory is the site of the world’s largest single-aperture telescope. The telescope dish, built into a natural limestone bowl, measures an astonishing 1,000 feet (305 m) in diameter. It is used in radar studies of comets and asteroids, as well as in radio astronomy, to detect and analyze radio waves from space. In what year was the Arecibo message, an attempt to communicate with extraterrestrial life, transmitted from the radio telescope? Discuss