The CMB radiation has many hot and cold spots in it, but none above a certain size. On the face of it, there is no reason why this should be so.

宇宙微波背景辐射有很多“热点”和“冷点”，但都没有稳定在某一水平，从表面上看，是不应该出现这样的情况的。

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Much of the progress has come through studies of the afterglow of the big bang, radiation known as the cosmic microwave background (CMB).

这一进展多半来自对大爆炸“余辉”——也就是为人所熟知的，名为“宇宙微波背景辐射”(CMB)的辐射能——的研究。

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Launched in 2001, WMAP measures differences in the Cosmic Microwave Background (CMB) radiation, the residual heat of the Big Bang that fills the Universe and appears over the whole of the sky.

WMAP于2001年被送入太空，用来测量宇宙微波背景(CMB，即充满整个天空的大爆炸残留热量)辐射的差异。

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They have produced highly accurate maps of the Cosmic Microwave Background (CMB) radiation, which has its origins in the very early stages of the Universe.

BBC: Pictures of the early Universe

One of the ways scientists study the CMB is by subjecting the warm and cold spots in the radiation to a detailed statistical analysis, examining the deviations in temperature as a function of their size on the sky - their angular scale.

BBC: The first fractions of a second after the Big Bang

The new map is a smart byproduct of the European Space Agency (Esa) telescope's main mission which is to survey the Cosmic Microwave Background, or CMB - a pervasive but faint glow of long-wavelength radiation that comes to us from the very edge of the observable Universe.

BBC: Planck telescope: A map of all the 'stuff' in the cosmos