The clear inference is that the universe is expanding.

显然结论是宇宙在扩大。

《牛津词典》

The universe is expanding.

宇宙在膨胀。

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And redshift depends on just how the universe is expanding.

并且红移取决于宇宙如何膨胀。

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Evidence that the universe is expanding was first discovered at Lowell Observatory by V.M.Slipher.

VOA: special.2010.07.11

In 1929 Edwin Hubble discovered that the Universe is expanding, which led to the Big Bang theory.

UNESCO: 2008 UK and Ireland Fellows

Similarly, astronomers devote much attention to the apparent fact that the universe is expanding.

ECONOMIST: Poisson: More is more | The

The observation that the universe is expanding is therefore a typical one if both versions exist.

ECONOMIST: The universe, it appears, may not be alone