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
Timeline of the 2011–12 Saudi Arabian protests (May–December 2011) Timeline of the 2011–12 Saudi Arabian protests (May–December 2011) The following is a timeline of the 2011–2012 Saudi Arabian protests from May to December 2011. The 2011–2012 Saudi Arabian protests are a series of ongoing protests taking place in Saudi Arabia, which began in January 2011, influenced by concurrent protests in the region. In May and June, motivated by the Arab Spring, Manal al-Sharif and other women organised a women's right-to-drive campaign, with the main action to take place on 17 June. Al-Sharif drove a car in May and was detained on 22 May and from 23‒30 May. Other women