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) Jay Leno Show" after being told that he had to "earn" a clip from his film "" to be shown. The 2009 film "Watchmen", a neo noir superhero film directed by Zack Snyder used "The Times They Are a-Changing" as the background music to the opening titles. On December 10, 2010, Dylan's hand-written lyrics of the song were sold at auction at Sotheby's, in New York, for $422,500. They were purchased by a hedge fund manager. The song is included in "The 500 Songs That Shaped Rock and Roll", a permanent exhibit at the Rock and Roll Hall of Fame.