with which the orbit of JUICE can be precisely measured. This instrument – the Planetary Radio Interferometer and Doppler Experiment (PRIDE) – is not located on board the spacecraft, but forms an ...

GALA is a 'laser altimeter' – an instrument that measures the heights and depths of a planetary landscape via the transit time of laser pulses. The GAnymede Laser Altimeter (GALA) for ESA's JUICE ...