WMAP was designed to provide a more detailed look at subtle temperature differences in the cosmic microwave background that were first detected in 1992 by NASA's cosmic background Explorer (COBE).

WMAP被设计用来对宇宙微波背景辐射的微小温度差进行详细观测，该差别首次在1992年被NASA的宇宙背景探测器观测到(COBE)。

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