A penumbral lunar eclipse occurs Friday, Oct. 18, 2013. See how to watch it live online here.
A total lunar eclipse occurs when the moon passes completely beneath Earth's shadow. On Dec. 10, 2011, the second of this year's two total lunar eclipses will occur, and will be visible in Asia, Australia, and will rise and set over Europe and North America, respectively. The first total lunar eclipse of the year occured June 15.