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, the European Space Agency admitted that the Gaia spacecraft was damaged in April by a fast-traveling "micrometeoroid," described as an extremely tiny piece of space rock, that damaged its protective outer shell.
The damage caused a small gap in the telescope's outer layer that eventually allowed in sunlight that, despite being way, way less intense than the ultraviolet rays we get here on Earth, still harmed Gaia's sensors.While handling that problem, ESA techs were faced with another in May when one of the 106 charge-coupled devices , or sensors that convert light into electrical signals and underly Gaia's billion-pixel camera, experienced a mysterious technical failure.
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