你现实的惟一联系就是宇宙中的地球。

Your only link to reality is the Earth out there;

youdao

地球是“宇宙射击场”中的一个靶子，容易随机遭遇各种猛烈的撞击事件，这在数十年前从未受到过怀疑。

Earth is a target in a cosmic shooting gallery, subject to random violent events that were unsuspected a few decades ago.

youdao

银河系中的超新星最有可能是大多数宇宙射线到达地球的来源。

Supernovas in the Milky Way are the likeliest source for most of the cosmic rays reaching Earth.

youdao