[dingaling]

For ESA missions you generally have to contact the Principal Investigator or PR team of the organisation sponsoring the instrument.

There have been examples when ESA itself wasn't granted access to the results of instrumemts on its own probes.

Theoretically they only have exclusivity for 6 to 12 months but few proactively release data after that time.

[exDM69]

Yeah, this is what I figured. However, being a one man hobby project, I doubt I'll even get a foot between the door. Even finding the contact information for the different data sets would be next to impossible.

I have considered enrolling to a university just to get access to the library, data sets and journals as well as get in touch with professors and scientists that could help.