The Spitzer Space Telescope recently ceased operations, powering down its remaining detector after more than a decade and a half of revealing the infrared Universe. Its legacy will be continued by far more expensive missions that will have big boots to fill.

中文翻译：

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Spitzer退后一步

Spitzer太空望远镜最近停止运作，在揭示红外宇宙超过十年半后关闭了其剩余的探测器的电源。它的遗产将通过昂贵得多的任务来延续，这些任务将需要大靴子来填补。