This is something you just won't see from Earth. The moon transiting across the face of the sun. On the rare occasions that happens from Earth we see a solar eclipse.
NASA's Stereo probe (or one of them, Stereo B) is about a million miles from the Earth and therefore the moon appears much smaller against the sun. The probe was therefore able to take this amazing image of a 'smaller' moon transiting the face of the sun.
There's also a video of the transit on the Stereo website.