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 Syrian Civil War (August–December 2015) Timeline of the Syrian Civil War (August–December 2015) The following is a timeline of the Syrian Civil War from August to December 2015. Information about aggregated casualty counts is found at Casualties of the Syrian Civil War. Rebels begin their push into the Alawite heartland by capturing much of the Sahl al-Ghab plain in northwestern Syria. According to the Syrian Observatory for Human Rights, four separate missiles were fired at Douma by SAAF fighters, which struck the main market in the town during rush hour, killing 96 people. At least 50 people - mainly women and children - are killed