之前只有欧洲航天局和美国航天局发送过探测器到那里。
Only the European Space Agency and the US have previously sent probes there.
事情发生在欧洲航天局的火星快车号宇宙飞船飞经这颗小卫星期间。
That’s when the European Space Agency’s Mars Express Spacecraft flew by the tiny moon.
星期五，欧洲航天局公布了2006年至2009年前后有关咸海的卫星照片。
On Friday, the European Space Agency released before-and-after satellite photographs of the Aral Sea in 2006 and 2009.
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