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[Music]

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i'm ashwin vasavada deputy project

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scientist for the mars science

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laboratory mission and this is your

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curiosity rover report

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it's been a fantastic 300 solves

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actually the discoveries began even

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before landing

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on the way to mars curiosity's radiation

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assessment detector or rad

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measured the high energy radiation from

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within the capsule that enclosed the

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rover

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these measurements will help nasa

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protect astronauts when they fly within

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spacecraft and are exposed to deep space

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radiation

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turns out that it's equivalent to

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getting a full body ct scan every five

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or six days

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by using curiosity's data nasa will

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learn how much shielding is needed to

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reduce the risk to astronauts

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after touching down on mars curiosity

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drove away from bradbury landing toward

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a region called glenelg where three

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types of terrain come together we were

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hoping that one of these terrains

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consisting of light toned and fractured

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bedrock might teach us something about

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an ancient dry riverbed that we spotted

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from orbit

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this river appeared to have started high

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on the rim of gale crater and flowed

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toward the site where curiosity landed

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spreading sediment in a fan across the

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crater floor

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even before we got to glenelg we began

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to see slabs of a rock called a

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conglomerate

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by studying the size of the pebbles

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within the conglomerate and by noting

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how rounded they'd become

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the team was able to conclude that they

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were carried by water ankle deep to hip

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deep

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flowing at about walking speed and

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extending for at least a few miles

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curiosity actually set her wheels within

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an ancient stream bed

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getting back to the present curiosity

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just finished drilling her second rock

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in yellowknife bay in order to confirm

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the remarkable discovery of an ancient

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habitable environment and to see if

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there's any variation among the rocks

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within the yellowknife bay

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we're now headed in the direction of our

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ultimate destination mount sharp five

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miles and several months away

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along the journey the science team will

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continue to explore for evidence related

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to the habitability of ancient mars

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this has been your curiosity rover