The "blood moon" eclipse above the Washington Monument just before dawn on the National Mall, in Washington, D.C. Andrew Harnik/The Washington Times /Landov hide caption

itoggle caption Andrew Harnik/The Washington Times /Landov

The moon appears red during a lunar eclipse in the Qatari capital of Doha, 28 August 2007. It's going to happen again tonight, and be visible across North America. Karim Jaafar/AFP/Getty Images hide caption

itoggle caption Karim Jaafar/AFP/Getty Images