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The spacecraft will visit three ofjupiter�*s moons. it will fly around ganymede, the largest moon in the solar system. its ocean could contain more water than all of the earth's oceans put together. it will also study callisto, whose ancient surface is covered in craters. this moon could harbour life, but that is not as likely as on europa, where the spacecraft will be trying to spot plumes of water vapour erupting from beneath its icy crust. i don't think we are expecting to go there and find schools of fish in the ocean, but to be honest with you, we really don't know, and i think that is ...

Working in an incredibly challenging environment. it will encounter harsh radiation and temperatures that swing between plus and minus 200 degrees. but the team is confident it will work and the next step is to pack the spacecraft up ready for its launch in april. scientists hope we will finally discover what lies beneath the surface of these mysterious moons and whether it is possible for life to exist elsewhere in our solar system. rebecca morelle, bbc news, toulouse. whoever they are, i suggest they keep their heads down. now it's time for a look at the weather with ben rich. good afternoon...

Moons won't be easy. the spacecraft will be working in an incredibly challenging environment. it will encounter harsh radiation and temperatures that swing between plus and minus 200 degrees. but the team is confident it will work and the next step is to pack the spacecraft up ready for its launch in april. scientists hope we will finally discover what lies beneath the surface of these mysterious moons and whether it is possible for life to exist elsewhere in our solar system. rebecca morelle, bbc news, toulouse. now it's time for a look at the weather with ben rich. good afternoon. changes in...

It is using infrared energy and infrared technology. when we have infrared waves have longer wave lengths than visible light and so when you're using infrared, think about it going deeper and further almost like an x-ray, right. it's going to be able to see through the dense regions of gas and dust and that kind of infrared energy is going to reveal objects we've never been able to see. one of the reasons the sun shield like had to deploy, it's like from the sun, kind of the sun shield side to the cold side, there's about a 600 degree differential and these infrared instruments have to have it...

And articulate 14-year-old. >> hundreds of people have done this including baseball legend ted williams. how does it work? >> sheinelle, you're right. hundreds of people have done this. what we have here is science hope versus science reality. essentially when somebody dice, they rush in right away and they do a few things. number one, they keep the blood flowing and essentially keep the body as alive as they can. while they do that, they inject them with a type of antifreeze to make sure those cells don't freeze up. then they cool the body down. in this case they ended up flying her to detroi...