Comet 17P/Holmes remains a striking target for binoculars, small telescopes, and even the unaided eye. Take the time to see this unusual visitor, which leapt from obscurity to celebrity last week. <br /><br />For reasons astronomers don't entirely understand, the cosmic iceball flared in brightness by a million times in just 2 days. This outburst propelled the comet from a faint-fuzzy best viewed in a large amateur telescope to a star-like object observers throughout the Northern Hemisphere could easily see in a moonlit sky. <br /> <br /> <br />Bright Comet 17P/Holmes lies in the constellation Perseus, in the northeastern sky after darkness falls. Astronomy: Roen Kelly [larger image] <br />Some observers are calling 17P/Holmes the ultimate "urban comet." While it lacks a spectacular tail, the comet is easy to spot from city locations. Take the time to observe it carefully. After a few minutes, visual observers may notice that it appears distinctly un-starlike. Even low-power binoculars reveal a ghostly disk surrounding a bright center. <br /><br />Amateurs who image Comet Holmes are finding detailed structures related to its recent blast of dust and gas. And, although Holmes is an old, relatively inactive comet, many observers now report just a hint of a bluish gas tail. <br /><br />Comet Holmes currently lies 150 million miles (245 million km) from Earth and 230 million miles (370 million km) from the Sun. In early May, the comet reached its closest point to the Sun in its 6.88-year orbit. At that time, Holmes was about twice as far from the Sun as Earth. Since then, the comet has been increasing its distance from the Sun. Earth, traveling on an inside lane of the solar system, will pass Holmes November 5. <br /><br />The comet lies about 30° high — one-third of the way from the horizon to straight overhead — at 9 p.m. local daylight time. It then appears about twice as high as the bright star Capella. For observers at mid-northern latitudes, the comet climbs directly <a></a>