
Above you’ll see Comet 17/P Holmes making its way across the sky. This photo was taken by philliefan_99, who caught this bright image just outside the city a few days after Holmes made an amazing outburst on October 24 — and by “amazing” we mean it brightened nearly a million times. Though the comet has been close enough to the Earth to be visible through fairly powerful telescopes since July, it’s now visible with the naked eye even through city light pollution.
Comet 17/P Holmes was first discovered by Edwin Holmes in London, England, in 1892, when the celestial object had a similar sudden decrease in magnitude (objects with lower magnitude numbers are brighter) and, in fact, experienced a second outburst just a few months after Mr. Holmes first saw it. Last week, the comet brightened from a magnitude 17 (slightly less bright than Pluto) to 2.5 (similar to Polaris, the North Star).
Sky & Telescope has an excellent guide to help you find Comet Holmes in the northeast sky tonight. If you’ve got a decent tri-pod, try taking a long exposure — see philliefan_99’s EXIF data for some help.