But they keep exploring Mars, and there is good reason.

但他们还是一直在探索火星，并且有不错的理由。

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With so much data coming back from Mars missions that are accessible by all, exploring Mars has become a shared human endeavour.

随着火星探测活动收集到的数据越来越多，这些数据任何人都可以理解，探测火星已经变成全人类共同努力的任务。

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Soon after NASA's robotic rover Opportunity began exploring Mars, it found minerals and rocks that its handlers said were evidence of a warm, wet history.

在美国航空与太空总署的机遇机器人探测器开始探究火星后不久，它发现了矿物，研究者说它的岩石是湿的温暖历史的证据。

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But Hubbard who just published a book about his Mars Czar days ("Exploring Mars: Chronicles from a Decade of Discovery") added that it's in the United States' best interest to give NASA the means to tackle ambitious Mars missions sooner rather than later.

MSN: Is huge Mars rover NASA's last big mission to Red Planet?

At a time when rovers are exploring Mars, a satellite is looping around Saturn's rings and a body larger than Pluto was recently found in the far reaches of the solar system, the reader who wants to catch up on developments could have done with a book of more uniform quality.

ECONOMIST: Twirls and swirls from outer space

By exploring and understanding Mars, we may gain key insights into the past and future of our own world.

CNN: Commentary: Let's aim for Mars