earthshine

They measured earthshine: sunlight that reflects off the Earth, hits the moon and bounces back.

他们对地球的反照光进行了测量：太阳光被地球反射到月球，然后又反射回来。

The Sun is really bright, [ citation needed] and its light illuminates the Earth. [ citation needed] Some of that light is reflected back into space as "Earthshine." Some of it skims close to our planet and passes through our atmosphere before continuing on to the stars.

太阳其实非常明亮，它照耀着地球。其中的一部分光被以“地球反照”的形式反射回太空，另一些则会贴近地球，穿过大气层后继续向其他星球传播。

That's the idea behind a recent look at earthshine.

这是研究人员最近根据地球反照光想到的一个办法。

The analysis of earthshine correctly revealed that the planet it came from has a partly cloudy atmosphere and is covered with oceans and some vegetation.

对地球反照光的分析显示：这个行星拥有一个云雾大气层，还被海洋和一些植被所覆盖。

You can see the spectrum of the Earth, this Earthshine spectrum, and that is a very clear signal.

你可以看到地球的光谱，这是地球反照光谱。是一个非常明确的讯号。