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distant galaxies

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black holes

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the martian surface

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we all know nasa explores some of the

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most far out parts of space

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but nasa is also working on crucial

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research right in our own backyard

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earth science researchers david toll and

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ted engman have been involved in efforts

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to incorporate nasa satellite data into

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water management projects around the

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chesapeake

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part of the nasa mission is to protect

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the

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satellite data has a very unique and

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powerful role it can play in managing

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our resources

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the satellite gives us

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the synoptic picture of the total bay

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and if there are improvements we should

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be able to see them with the satellite

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data or if there's degradation that

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should it be

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able to be detected also

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this is the way nasa sees the chesapeake

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bay with one of its satellites called

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but as beautiful as it looks the

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chesapeake bay is in trouble

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four centuries of urban population

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growth have crippled the bay

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harming water quality and threatening

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the species that rely on a healthy

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ecosystem

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you can see if you fly over the bay you

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can see

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the difference in color in in the water

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and that's indicative of sediment or

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algae or some other type of

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problem

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area and i think the ability of

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satellite data to portray this without a

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single word

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you can you can see what what the

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situation is

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many of the pollutants that degrade the

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bay come from its watershed

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an enormous area of 64 000 square miles

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that covers parts of six states

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watershed runoff carries more pollutants

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when it travels over paved surfaces and

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cropland versus marshlander forests so

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land cover information from satellites

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helps bay managers predict the best

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places to curb watershed pollution

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the unique role that nasa can play

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in

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it provides an environment for

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the other agencies and state groups to

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look at the total picture of the bay and

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how

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various water quality indicators change

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such a fragile ecosystem that by being

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able to perhaps use satellite data to