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Even though it was not designed as an exoplanetary research mission, the DeepSpace Climate Observatory (DSCOVR) has been opportunistically used for a novelexperiment, in which Earth serves as a proxy exoplanet. More than two years ofDSCOVR Earth images were employed to produce time series of multi-wavelength,single-point light sources, in order to extract information on planetaryrotation, cloud patterns, surface type, and orbit around the Sun. In whatfollows, we assume that these properties of the Earth are unknown, and insteadattempt to derive them from first principles. These conclusions are thencompared with known data about our planet. We also used the DSCOVR data tosimulate phase angle changes, as well as the minimum data collection rateneeded to determine the rotation period of an exoplanet. This innovative methodof using the time evolution of a multi-wavelength, reflected single-point lightsource, can be deployed for retrieving a range of intrinsic properties of anexoplanet around a distant star.

Using Deep Space Climate Observatory Measurements to Study the Earth as An Exoplanet