I finally finished a releasable version of this promised mod.
You can blame Civilization V for the late delivery. :S
What does this little mod do:
Added new labels for planetary descriptions in the Astronomical/Tactical screen after the briefing has played in a campaign. (gssm_infos)
Made some changes to dates -and text in the Nexus campaign that in my opinion fit better with the timeline in it. (diary, diary_texts and gssm_details)
In both cases there are only translations to English and German for the changes.
The gssm_infos (planetary descriptions) work just fine in a mod, but the other three files need to be in the root of the game because they work on the campaign level.
I made this in mod format so one wouldn't by mistake overwrite original files of the game. It's your choice which files you choose to bring in the root of the game (always make backups of original files).
I suggest the following procedure to check out the planetary descriptions:
Place the "Revised systems" folder in "Nexus - The Jupiter Incidentmods".
Open up the mod_tools of the game, and select "Revised systems" in the drop down box.
Press the "Start Solar System Editor" button.
Exit the solar system editor (cntrl+Q)
Insert the game disk in your drive (not necessary if you use a cracked executable of the game).
Open up a command prompt screen, and make sure the pathway in it is "C:Program FilesNexus - The Jupiter Incident" or whatever path the game is installed on your end.
type "Nexus_dx9.exe" - starmap (or "nexus_dx8.exe" - starmap if you have a very old graphics card) and press enter. (credits to Arparso who figured out several prompt commands)
And voilà. The game should start and present you with the Astronomical/Tactical screen in which you can select star systems and browse through them.
Link to the download:
http://www.filefront.com/17533447/Nexus---The-Jupiter-Incident.zip/