[UPDATE: i had originally embedded the video here, but got some funny display issues, thanks to my *cough* unorthodox page design. just visit the link.]
that's our moon, crossing in front of our sun.
from the source:
On Feb. 25, 2007 there was a transit of the Moon across the face of the Sun - but it could not be seen from Earth. This sight was visible only from the STEREO-B spacecraft in its orbit about the sun, trailing behind the Earth. NASA's STEREO mission consists of two spacecraft launched in October, 2006 to study solar storms. The transit starts at 1:56 am EST and continued for 12 hours until 1:57 pm EST. STEREO-B is currently about 1 million miles from the Earth, 4.4 times farther away from the Moon than we are on Earth. As the result, the Moon will appear 4.4 times smaller than what we are used to. This is still, however, much larger than, say, the planet Venus appeared when it transited the Sun as seen from Earth in 2004.there are high resolution versions available at the site.
on a related note, pray really hard for clear skies tomorrow evening. it'd be a shame to miss the moon show.