U.S.-born scientists Saul Perlmutter, Brian Schmidt and Adam Riess won the physics prize on Tuesday for discovering that the universe is expanding at an accelerating pace.
美国（天体物理学家）萨尔·波尔马特、物理学家布莱恩·施密特以及亚当·里斯由于发现宇宙的不断膨胀获得2011年诺贝尔物理学奖。
This year's Nobel Prize winners were honored for, among other things, discovering that the universe is expanding at an accelerating pace;
今年的诺贝尔荣获者因为发现宇宙正以一定的加速度扩展；
Some highlight the philosophical challenges of discovering that life exists on Mars or elsewhere in the Universe, or indeed of finding that it does not.
有些人提出发现（火星或宇宙其它地方拥有生命时，或者发现火星没有生命时会遇到的哲学挑战；
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