I've published a second Traveller supplement over on DrivethruRPG - Wonders of a Solar System: Gas Giants. This is a smaller book, really just a list of random events of natural phenomena that can be found at gas giants. It's pretty system neutral, but has some references to the Mongoose Traveller rules so I've once again released under the TAS license.

I plan for this to be the first in a series of supplements - Kuiper Belt Objects and Rogue Planets are probably up next. The idea is to provide some random encounters that are mostly natural in nature.