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an international research team led out

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of nasa's goddard space flight center

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have obtained the first direct detection

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of water vapor on Jupiter's moon Europa

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this came in the form of an infrared

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signal captured by an instrument on the

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Keck telescope in Hawaii past NASA

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missions and earthbound telescopes have

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found strong evidence suggesting there

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is an ocean of water beneath Europa's

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icy surface and plumes seemingly

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bursting through cracks into space in

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this recent study the scientists

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observed the entire surface of Europa

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over 17 days in 2016 and 2017

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in one instance there was a short-lived

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spike in infrared light a spectral

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fingerprint that could only be due to

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water vapor when water escapes from

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Europa's subsurface reservoirs the

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resulting vapor is exposed to radiation

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from the Sun and the h2o molecules give

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off a distinctive infrared glow this

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glowing signal detected by Keck allowed

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scientists the first direct measurement

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of water vapor on Europa and here

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scientists measured over 2,000 tons of

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water in the plume nearly the volume of

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an Olympic swimming pool while

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scientists currently have limited

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ability to detect liquid water on Europa

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this new detection of water and vapor

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form is the next best thing in the

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search for one of the most essential

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ingredients for light this discovery

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will inform future observations of

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Europa including NASA's upcoming Europa

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clipper mission which will study the

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Jovian moon and close range

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these efforts should further unlock the

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secrets of Europa and its potential for