The only reasonable interpretation is that this background is radiation left over from an early hot and dense state.

唯一合理的解释是这一情况是宇宙早期处于炎热而密度大的状态时遗留下来的辐射。

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Our whole universe was in a hot dense state, Then nearly fourteen billion years ago expansion started. Wait...

我们的宇宙曾处于炎热致密的状态，然后大约一百四十亿年前它开始膨胀。

youdao

In 1931, his Letter to Nature introduced a Cosmic Egg hypothesis, the notion that the entire universe originated in a cold, super dense state and expanded outward.

FORBES: European Space Agency Names Launcher after 'Father of the Big Bang'

The team that has done this for Planck's data says the map is an elegant fit for the standard model of cosmology - the idea that the Universe started in a hot, dense state in an incredibly small space, and then expanded and cooled.

BBC: Planck satellite: Maps detail Universe's ancient light

Utility companies and state officials blame 90% of the epic power outages on the state's dense woods.

WSJ: If a Tree Falls, Will the Lights Go Out? Maybe in Connecticut