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ken edge it and Mike Mahlon our space

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photographers fascinated by what they

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see and learn from their images but

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unlike other photographers the cameras

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they use our millions and millions of

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miles away circling the Red Planet the

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Mars orbiter camera is on the Mars

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Global Surveyor orbiting the planet

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since 1997 the missions longevity has

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allowed scientists to monitor a changing

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planet this enabled the camera team to

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witness the appearance of craters were

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none existed before and see evidence of

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current water flows on the surface the

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thing that startles me the most is the

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idea that water has flowed on Mars in

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this decade one of these two sites that

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we observed it had no new deposit in the

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galley in 2001 which was in this decade

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we come back in 2005 and there's this

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stuff that was amazing do you think

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what's actually happening is that

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there's ice formed in the rock and it's

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acting as a dam and then water builds up

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behind that I stabbed and when the

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pressure of that water gets high enough

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it breaks through the dam and out comes

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a lot of water and the debris that was

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forming the dad for an astronaut or a

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robotic vehicle you wouldn't want to be

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in the gully at the time clearly that

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would be like being caught in a channel

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in the desert during a flash flood many

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of us have heard for years the the

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mantra of follow the water that that's

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what NASA's Mars exploration is about we

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now know where to look using this

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before-and-after technique the team made

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another very serendipitous discovery it

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was in a picture that we taken as

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context for for a higher resolution view

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and I put in my notes why hadn't we take

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in a picture of the dark spot and Ken's

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response was because it didn't exist it

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was an impact crater a new one formed in

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the last five to six years since then

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they found a total of twenty new craters

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in a relatively small area

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if someone were to live on Mars for

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about 20 years the cratering rate is

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high enough that they would hear one of

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these events sometimes during those 20

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years there are enough of these objects

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hitting spread out statistically over

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the planet that you would expect to hear

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one of these blasts when it hit the

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ground oh that isn't happening on the

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earth the findings add to Mars Global

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Surveyor zega see the spacecraft is

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probably finished with its operating

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life but it leaves a treasury of

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scientific discovery find any evidence

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for liquid water today is mind-boggling

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ken and I are explorers we unfortunately

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have to use a surrogate vehicle I think

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both of us would love to go to Mars and

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come back but this is exploration it's

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not just a intellectual activity it's an

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emotional activity as well NASA's Mars

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Reconnaissance Orbiter continues the

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work of Mars Global Surveyor by taking

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pictures of this amazing planet at even