JUICE's journey to Jupiter includes fly-bys of Venus and Earth.
But the long journey does not mean that mission scientists will get to put their feet up for eight years. In fact, their work is just beginning."It would be nice to forget about it for eight years, but we'll be kept pretty busy planning and replanning," said Randy Gladstone, of the South-west Research Institute in San Antonio, Texas, in an interview with Space.com.
An illustration of JUICE's journey and the gravity assists that will get the spacecraft to the Jovian system. While all this is happening, mission scientists have to learn about how the spacecraft and their instruments work. Although the instruments have been checked out in the laboratories where they were built onLearning how the instruments work will be"the first thing to do," said Gladstone. On the spacecraft, the various instruments may begin to impact each other.
To calibrate everything, the instrument teams will use carefully chosen target stars that have very stable and well-known properties. In particular, Gladstone's team will compare the known spectra of the stars with what UVS observes, proceeding to fine-tune the instrument until the observations match the spectra on file.
Some of the calibration of the various instruments will also take place during the fly-bys of Earth and Venus, although testing is limited within two
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