http://www.masil-astro-imaging.com/SWI/UV%20montage%20flat.jpg
".But the telescope plainly shows us its horns to be as bounded and
distinct as those of the moon, and they are seen to belong to a very
large circle, in a ratio almost forty times as great as the same disc
when it is beyond the sun, toward the end of its morning
appearances. " Galileo
Other than the moon at an eclipse where the lunar orbital cycle places
the moon directly between the Earth and the Sun is it possible to see
a full phase of darkness but the event in a few weeks is special for
so many reasons-
http://www.youtube.com/watch?v=mTqT5pk9vTM