Although just spotted a few days ago, Comet ISON (C/2012 S1) has the potential to become a very bright object that will be well placed for viewing in late 2013. Faint, distant comets get discovered all the time, usually by robotic telescopes that sweep up huge swaths of sky every clear night. Most come and go quietly. But a new find made on September 24th by a pair of amateur sky sleuths has the a