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View Full Version : ESA mission to Jupiter's moons gets go ahead


Pixel42
2nd May 2012, 12:10 PM
Esa selects 1bn-euro Juice probe to Jupiter (http://www.bbc.co.uk/news/science-environment-17917102)

The European Space Agency (Esa) is to mount a billion-euro mission to Jupiter and its icy moons.

The probe, called Juice, has just been approved at a meeting of member state delegations in Paris.

It would be built in time for a launch in 2022, although it would be a further eight years before it reached the Jovian system.

The mission has emerged from a five-year-long competition to find the next "large class" space venture in Europe.

Juice stands for JUpiter ICy moon Explorer. The concept proposes an instrument-packed, nearly five-tonne satellite to be sent out to the Solar System's biggest planet, to make a careful investigation of three of its biggest moons.

The spacecraft would use the gravity of Jupiter to initiate a series of close fly-bys around Callisto and Europa, and then finally to put itself in a settled orbit around Ganymede.

Emphasis would be put on "habitability" - in trying to understand whether there is any possibility that these moons could host microbial life.

Callisto, Europa and Ganymede are all suspected to have oceans of water below their icy surfaces. As such, they may have environments conducive to simple biology.

Awesome.

SonOfLaertes
2nd May 2012, 12:20 PM
Bravo! I myself think that this should be a NASA priority as well - land a sophisticated robotic explorer, perhaps even a borer of some kind, on Europa.

Mark6
2nd May 2012, 01:59 PM
What were the competing missions?

edd
2nd May 2012, 02:00 PM
Well we knew ESA was going to do something. It's obviously great to see a space mission but there's a few people I've heard who are feeling sore about one or the other of the missions not making the cut. Spare a moment to think of them ;)
(eLISA/NGO - a gravitational wave observatory, and Athena - an X-ray observatory are the missions that won't be happening as mentioned in the article)

steve s
2nd May 2012, 02:05 PM
This sucks. I'll be 65 when this thing finally gets to Jupiter. I was hoping to live long enough to see the day when we've got a probe swimming around in the oceans of Europa.

Steve S

rjh01
2nd May 2012, 03:35 PM
Great. I want to know how much difference it will make to society what we learn from the data that is sent back. We can answer this question by looking at what happened with the data from other similar space probes.

Multivac
3rd May 2012, 03:43 AM
This is great news. We need to learn more about the outer reaches of our solar system.

edd
3rd May 2012, 06:29 AM
http://physicsworld.com/cws/article/news/2012/may/02/juice-picked-for-launch
(via http://telescoper.wordpress.com/ )

Mark6
3rd May 2012, 07:04 AM
I noticed the eight years flight time. That's longer than Galileo, in fact longer than Cassini spent getting to Saturn. I googled for JUICE trajectory, and found this:

http://www.lpi.usra.edu/pss/dec2011/presentations/JoanSalute.pdf

Gravity assists are Earth-Venus-Earth-Earth. No wonder it will take 8 years!