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The science team said it was especially pleased that Mars Express nabbed images of Phobos from several "phase angles," meaning the angle between the light source (which was the sun) and the observing spacecraft.
"Images acquired across a range of phase angles … are incredibly useful for scientists," ESA added. "Different shadows are cast as the sun's position changes relative to the target object: This illuminates and highlights the surface features and enables calculations of feature height, depth and relief and reveals much about the roughness, porosity and reflectivity of the surface material itself."
The spacecraft will get its next chance to capture images of Phobos in such direct solar light in April and September.