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Image: Earth through a 2-mm lens

A distant, partly shadowed Earth, as viewed from a 6,000-km-altitude orbit. This unusual image was acquired using an extremely miniaturized camera about the size of the edge of a 20 cent coin—a miniscule technology experiment aboard ESA's shoebox-sized TRISAT-R CubeSat.
TRISAT-R project manager Iztok Kramberger of the University of Maribor explains: "This tiny camera measuring less than two cubic millimeters in size took a picture of an object measuring approximately one trillion cubic kilometers—our beautiful planet Earth—from thousands of kilometers away."
A CubeSat made from three standardized 10-cm boxes, TRISAT-R is Slovenia's second space mission, which flew on Europe's inaugural Vega-C launch last year to the relatively inhospitable environment of medium-Earth orbit, at 6000 km up. The mission's orbital path takes it right through the heart of the ionosphere—an electrically active layer of Earth's atmosphere—as well as the inner Van Allen radiation belt.
This allows TRISAT-R to test a suite of radiation-detection payloads. In addition, the TRISAT-R team embarked a pair of tiny cameras, with lenses made from clear borosilicate glass to provide limited radiation resistance, mounted directly onto 320x320 pixel image sensors.