On FEB 10'2009, Japan’s KAGUYA (a.k.a. SELENE) lunar explorer shot video of the Earth as it passed between the Sun and the Moon. The probe’s HD cameras captured a rare view of the so-called “diamond ring effect” seen from the Moon. The phenomenon is usually only ever observed during total solar eclipses on Earth, just as the Sun emerges from behind the Moon. http://www.youtube.com/watch?v=x6FQfwB-kgs