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can there be life elsewhere where are

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the habitable environments in our solar

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system Mars is an obvious place to think

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about but so are the icy worlds of the

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outer solar system where beneath their

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surfaces there may be liquid water

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oceans the Europa Jupiter system mission

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is a partnership between ISA and NASA to

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send two spacecraft to the Jupiter

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system one to orbit Europa the other two

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orbit Ganymede to understand what we're

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phrasing as the emergence of habitable

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worlds around gas giants the subsurface

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oceans are certainly the key driver for

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exploration of these worlds Europa is a

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fascinating place with an ocean that

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might be only tens of kilometres below

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the surface and may communicate actively

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with the surface they're erupting

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through icy convection blobs of warm ice

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moving up to the surface through

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cracking and breaking of the ice so

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there could be signs on the surface of

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what's going on deep down below the

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surface so what we can do with a

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spacecraft in orbit around Europa is

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measure how you OPA flexes as its

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stretched by Jupiter's gravity that

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tells us something very specific about

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how stiff that ice shell is and by how

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stiff it is we can get a measure of its

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thickness you rope as may be rarer

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example of an ocean in contact with a

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rocky mantle

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ganymede actually might be a more common

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example of a notion where it's it's a

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Callisto

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the relatively dead world has not the

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level of activity that Europa and

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Ganymede have yet we think that Callisto

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has an ocean beneath its surface it's

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not out of the question that if there

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are liquid water oceans down there and

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there's heat and there's energy that

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there could possibly be life

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the Europa spacecraft will make three or

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four close flybys of Io the most

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volcanic Li active world in our solar

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system in fact we might even be able to

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fly through one of these volcanic plumes

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and sample the material that's spewing

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out and we're not going to forget the

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big guy either

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Jupiter we're gonna be able to make

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observations of Jupiter and its rings as

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we orbit for about two years what's

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really compelling about these worlds is

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our search for whether there is life

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elsewhere not just in the solar system

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but in the universe can these be

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habitable environments that's really