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| Engineering test satellites test advanced technologies in orbit, which will be used to improve and enhance artificial satellites. |
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| SOLARD-B is the third-generation solar physics satellite of JAXA a successor to the greatly successful SOLAR-A. The satellite was launched in 2006 on a mission of elucidating the wonders and mechanism of solar activities in the corona zone by means of a high-powered reflecting telescope of 50cm diameter. |
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