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The scientists were able to determine that there are large amounts of organics actually found on these rocks.
科学家们能够确定在这些岩石上确实发现了大量的有机物。
This mission is not looking for extant life, things that are live today.
这项任务不是在寻找尚存的生命，现在活着的生物。
Instead, we're looking into the very distant past when Mars's climate was very different than it is today.
而是回顾非常遥远的过去，也就是火星的气候与现在截然不同的时候。
There are molecules that contain carbon and then aromatic molecules, most likely.
最有可能的情况是，有机物中存在含碳，或者含芳香烃的分子。
So these ring structures.
所以是这种环形结构。
And so these ring structures and aromatics can be made in a variety of ways.
产生这些环形结构分子和芳香烃物质的原因有很多。
If there was life in the past, we, on Mars, we would expect to see these aromatics left behind, but there's other possibilities that in other mechanisms for these molecules to be deposited on Mars, too.
如果过去火星上存在生命，就会残留下芳香烃，但这些分子的沉积也有可能是其它因素在发挥作用。
Does this mean there was life once on Mars or does it mean something else is going on that we don't quite understand yet?
这意味着火星上或许曾经存在过生命，或者正在发生一些我们还不太了解的事情。
