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[Music]

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perseverance rover

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mission is really an outcome of decades

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of research and planning

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for astrobiology and particularly my own

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research into ancient planetary

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environments on earth

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their nature and how they've changed

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over time of course life's origins and

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it's early evolution and

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where we would look for evidence of life

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on

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early earth and then what particular

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features you look for

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my own personal research is a geochemist

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which is basically a

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chemist who studies geologic materials

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rocks and so forth

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and studying early history i'm very

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interested in how

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life and its environment have affected

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each other over time

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and therefore really giving insights to

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why life

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is the way that it is now of course

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jezreel crater

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is a landing site whose selection is an

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outcome of all that research that has

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been done on

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early earth because it resembles early

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earth environments that had

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fossils in them ancient environmental

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conditions were more habitable on earth

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so ancient and

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for me i mean it's finding rocks

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minerals chemicals and other features

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that really demonstrate

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that we have an example of ancient

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habitable conditions

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and potential signatures of life but the

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key point here is that

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we expect them to be much better

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preserved than what we have on the early

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earth earth has really

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ravaged that record and we have every

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expectation that mars has done a better

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job

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at preservation and so what i loved

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as a big discovery would be multiple

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features that might be potential

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preserved fossils and of course the

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ability to collect those samples

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and returning them yeah that's that's a

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big if you know if we find something

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that's really cool

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can we get the proper samples from it

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that could be returned

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so in a way all this would build towards

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potentially

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establishing mars as a second example of