Thank you for that system. Free floating unknown probes confirmed there too:
http://imgur.com/a/tl4Fm
So, Unknown Probes are found near ammonia worlds near a nebula surrounded by the UA.
I don't know how much of a leap this is but given the Thargoids are previously an ammonia based life form, this is very easy to speculate as them looking for Thargo-formable (what is their home world called?) planets to settle on in our galaxy.
Or they may have changed the physiology of Thargoids this time around to be not ammonia based and this could be another ammonia based alien species looking for new homes. They could also be a non-Thargoid ammonia based life form while Thargoids are still the same lore-wise.
Could we at least confirm the probes are actual probes looking for ammonia worlds now?
The only questions left in my head are why Merope and why point to Merope 5 C?
What do you think, too many assumptions or dwelling on the obvious?