I don't suggest anyone hold their breath, but...
A new comet has been discovered that is predicted to blaze incredibly brilliantly in the skies during late 2013. With a perihelion passage of less than two million kilometres from the Sun on 28 November 2013, current predictions are of an object that will dazzle the eye at up to magnitude —16. That's far brighter than the full Moon. If predictions hold true then C/2012 S1 will certainly be one of the greatest comets in human history, far outshining the memorable Comet Hale-Bopp of 1997 and very likely to outdo the long-awaited Comet Pan-STARRS (C/2011 L4) which is set to stun in March 2013.
Comet brightness prediction, as evidenced by comets Kohoutek in '73 and Hale-Bopp in '96, both of which failed to live up to expectations, is a very imprecise science at best. Many comets have large 'outbursts' at great distance but tend to wane as they get closer to Earth. But both of the upcoming ones mentioned in the article look promising.
And from a different article:
Astronomers predict that the comet will pass just 1.16 million miles from the Sun as it swings around its perihelion, or closest approach. (This may seem like a lot, but remember—the Sun is big. If we were to scale the Sun down to the size of Earth, the comet would pass well within the orbits of dozens of satellites.) The close approach will melt enormous amounts of the comet’s ice, releasing dust and gas and forming what should be a magnificent tail.
We'll keep our fingers crossed.
