The Bruce Murray Space Image Library
Proba-2 star tracker image
Filed under pretty pictures, Earth
Proba-2 is the second in a series of miniature satellites launched by ESA to serve as a platform for testing new space technologies. This photo was captured by Proba-2's "Micro-Advanced Stellar Compass" or star tracker; this advanced instrument, a critical component for spacecraft navigation, has a mass of less than half a kilogram. The image captures a view across Earth's limb, seeing its thin atmosphere.
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