LOS ANGELES—Weather permitting, the full moon will appear blood red tonight during a total lunar eclipse—and the Griffith Observatory will be open for on-site public viewing.
A total lunar eclipse occurs when the moon passes directly and completely into the dark inner shadow, or umbra, cast by the Earth. During this activity, 100 percent of the round disk of the full moon slowly moves into the dark shadow, and the bright moon—usually milky white—grows dim.
