History of radar for various purposes; on the Shuttle Radar Topography Mission, the entire planet was mapped at a 30-m resolution. The Jodrell Bank Observatory, an operation of the University of Manchester in Britain, was originally started by Bernard Lovell to be a radar astronomy facility. It initially used a war-surplus GL-II radar system operating at 71 MHz (4.2 m). The first observations were of ionized trails in the Geminids meteor shower during December 1945. While the facility soon evolved to become the third largest radio observatory in the world, some radar astronomy continued. The largest (250-ft or 76-m in diameter) of their
The Times They Are a-Changin' (song) which was moderately successful. In addition to its appearance on the Byrds' second album, "The Times They Are a-Changin" is included on several Byrds compilations, including "The Byrds' Greatest Hits Volume II", "The Very Best of The Byrds", "The Byrds", "The Essential Byrds", "There Is a Season", and "The Byrds Play Dylan". In January 1984, a young Steve Jobs recited the second verse of "The Times They Are a-Changin'" in his opening of the 1984 Apple shareholders meeting, where he famously unveiled the Macintosh computer for the first time. In 1994, "The Times They Are a-Changin'" was licensed for use