Like NASA's Ed Weiler says: "The definition of life has just expanded."

如nasa的Ed Weiler所说：“生命的定义刚刚已经扩展了。”

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Ed Weiler: The Hubble has discovered things that we could never have anticipated.

爱德华·威勒：哈勃望远镜带来的新发现是我们未曾想过的。

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Ed Weiler says the Hubble telescope also confirmed the existence of black holes.

Ed Weiler表示，哈勃望远镜还证实了黑洞的存在。

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"Landing on Mars is very difficult, and it's harder on some parts of the planet than others, " says Dr Ed Weiler, associate administrator for space science at Nasa in Washington, DC.

BBC: Gusev crater (Nasa)