The comet ISON is currently barreling toward the sun with a close solar encounter due on November 28. It's currently visible in our morning skies, but will become a night-time sight in a few months if it survives the close approach to the sun.
Comets are notoriously unreliable. When Halley's comet returned in 1986 it was pretty much a bust for visual observers. ISON could shine as brightly as the full moon, be a dim asterisk or something in between.
That brings me to the the Comet ISON app (US$0.99). It's the nicest comet-finding app I've seen so far. It will help you locate ISON, then let you get aboard the comet for a 3D fly-t
