A midlands astronomy club member says it will benefit future missions.
A robotic explorer will take off on an eight-year, four-billion mile journey to Jupiter's moons later today.
The probe - called JUICE - will study Ganymede, Callisto and Europa, which are covered in a thick layer of water-ice.
It was due to launch yesterday but was delayed due to lightening.
Seanie Morris from the Midlands Astronomy Club says this study will be beneficial for future missions:
Colin Farrell Rumoured To Be Part Of Star Filled Production In Offaly
Offaly Athletics Club Pushing To Raise €400k For New Olympic Sized Track
Offaly Community Hopeful Of Town Hall Reopening By 2030
Hospital Parking Charges Rise By Over €10m
Road Haulage Association Calls For Fuel Support Extension
Plans Submitted For New Off-Licence And Pizzeria In Laois
M6 Crash In Westmeath Causing Major Delays
Offaly Community Campaigning For Waterway Intervention