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Titan is the only planetary body besides

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earth that we know has lakes at 290

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degrees Fahrenheit below zero the only

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liquid that makes sense there is a

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combination of methane and ethane this

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lake is Ontario lacus in titan southern

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hemisphere it's a little smaller than

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Lake Michigan we've colored the lake

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black because we think that's probably

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it's real color although we don't really

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know for sure we've exaggerated the

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heights of the shoreline features to

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make them easier to see notice these

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hills probably made of water ice see how

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the liquid is flooded up the valleys

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further north is a long smoother beach

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that looks like it's been shaped by

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waves you can see some lines along the

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beach that might be old shorelines like

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bathtub rings so we know the level of

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the lake has changed

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now we're turning east to a very obvious

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Bay that cuts into the beach so it's

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likely to be younger we'll cross over

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the lake you'll see some flooded valleys

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and in the background is a large river

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that makes a delta like the Mississippi

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River its shape means the lake is

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shallow and the river is slow Ontario

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Shores surprisingly like earthly lake