Astronomy Picture of the Day

Explanation: The brightest comet in the sky right now is Comet Williams. Moving slowly though the constellation of Centaurus, Comet Williams, at magnitude 8, is visible to Southern Hemisphere observers with binoculars. In ten days, Comet Williams will reach its closest point to the Sun, although it will still be further from the Sun than the Earth. Comet Williams should become visible to many Northern Hemisphere observers in late November. At magnitude 10, however, it might require a small telescope to see. Comet Williams was discovered in early August by Peter Williams. The above image was taken August 25th from Australia.