All of this is where logic leads us. So if we logically follow the clues we should find the free floaters, but we haven't. So how is it that the most basic of logic is failing us all?
The only suggestion I can offer, is that we are not supposed to know that the probe points to 5c to find free floaters. I could be wrong and the convoys were meant to be found first, but with how they keep saying those are the "hard" way, I can only assume we were supposed to find free floaters first.
So how do we find those? We go back to the beginning. Work from there. Discount everything we know about the probe. Use the data from the UA and maybe the barnacles to find the free floaters. The idea that the spectrogram is going to lead back to the free floaters is a bit far fetched to me. Its too circular of a puzzle. Find a probe, spectrogram, leads to a probe. Just doesn't seem logical. Only way that works is if there are many, many probes and we are supposed to follow a chain of them somewhere. (yes, I realize I'm countering my own arguments at this point.)
And to the people who are not concerned about finding the free floaters, and are just following what we know of the probe to wherever its supposed to lead us, all I have to say is this..
WHY would the probe point to Merope 5c, only then to lead us to somewhere in the same system? It could easily point to the planet it needs to point at. If Merope 5C is not where we find something, but is just a reference point, then it would make more sense to be a reference point in a puzzle using the system as a diagram to point us at something that is not going to be in that system.
An alien race (or humans) is not going to lead us on a search using overly complicated puzzles if it has the means to simply point and say "look here." Which is exactly what it looks like its doing to me. Pointing to Merope, then pointing to Merope 5c.