From the EPOXI website:
On May 29 and June 5, EPOCh will again turn the EPOXI telescope toward our own Earth, and observe it in the visible and infrared for a full rotation. These data will be used to characterize the "Earth as an exoplanet," essentially to calibrate the properties of possible "pale blue dots" that may eventually be imaged by advanced missions such as the Terrestrial Planet Finder. The May 29 observations will be especially interesting because the Moon will "transit" the Earth while EPOCh is watching, and this is a view of the Earth-Moon system that has seldom if ever been seen before.
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