Meteor shower particles that are quickly blown away by solar radiation pressure). Recently, Peter Jenniskens has argued that most of our short-period meteor showers are not from the normal water vapor drag of active comets, but the product of infrequent disintegrations, when large chunks break off a mostly dormant comet. Examples are the Quadrantids and Geminids, which originated from a breakup of asteroid-looking objects, 2003 EH1 and 3200 Phaethon, respectively, about 500 and 1000 years ago. The fragments tend to fall apart quickly into dust, sand, and pebbles, and spread out along the orbit of the comet to form a dense meteoroid
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