A partial solar eclipse will darken North American skies Thursday afternoon (Oct. 23), and you can watch the dramatic celestial event online if clouds hinder your view.
The online Slooh Community Observatory will air a special three-hour webcast for the partial solar eclipse today starting at 5 p.m. EDT (2100 GMT). You can watch the show — which will feature live views from Arizona's Prescott Solar Obsevatory and other telescopes around the world — at http://www.slooh.com/

You can also watch the solar eclipse webcast at  Other webcast feeds are expected by the Griffith Observatory in Los Angeles, California and the University of Arizona's SkyCenter at Mount Lemmon.