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in the search for life elsewhere in our

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solar system NASA is exploring the red

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planet Mars and is building the

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foundation to study Saturn's largest

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moon Titan some of the tools and

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techniques for this endeavor are being

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developed and tested on Laguna Negra a

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high-altitude lake in the central Andes

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of chile by the scientists in charge of

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the planetary Lake Lander project

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Earth's high-altitude condition of

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strong ultraviolet radiation and harsh

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climate may be comparable to conditions

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on Mars in its distant past similarly

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Titan intrigued scientists it is a

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strange world where methane gas seeds

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the air lakes and rivers with the

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chemical building blocks of life Angela

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Detweiler is a lab specialist helping to

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calibrate the prototype sensors of the

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lake Lander so if we're looking for life

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and other planets you know what are we

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looking for one thing that we're looking

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for biosignatures and bio signatures are

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signs that were left by biological

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systems so gases would be an example on

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oxygen organic acids and so if those

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elements are able to survive that's a

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type of bio signature and we try to

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understand the earth first so that we

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can have a better understanding of what

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for more information on these topics go