ESA began and finished 2015 with the launch of two innovative missions: IXV, the Intermediate Experimental Vehicle, and the LISA Pathfinder.

In March, two new Galileo navigation satellites were sent into space, and another four were launched by the end of the year.

There are total fourteen Galileo satellites up and running.

In June, Sentinel-2 was launched to survey changes in the Earth’s landscape, oceans, and atmosphere.

Europe’s comet chaser mission, Rosetta, also provided some great information on comets in 2015.

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