Isabella drifts into a new system. This is farther than she usually ventures, but she can make it back to a new human colony after a complete survey here, with a margin of error, and refuel there to get back into central Federation space. Still, she's a little apprehensive as she drops out of warp. If the system proves to be unusually complicated she'll have to do it in two stages.
"Their average lifespan is about a day: my instruments tell me the one I came through has more than a quarter of its lifespan left, but less than three-quarters. The fact that it's bridged to by a wormhole at all suggests that there will be more, though. I haven't scanned the system thoroughly enough to know which of these anomalies my computer's reporting might be a wormhole, but I would bet you a decent number of ISK that the one I came through isn't the only one in-system."
"I suppose I can tell Starfleet where this is and they can send a ship to park in this system and wait for a wormhole to open. The Sleeper nest, if there's anything left of it by then, should help with my credibility."
"... Might work, might not. While there will almost certainly be wormholes, I can't assure you that there'll be any traffic through them. You could be waiting for a while."
"Starfleet might be willing to send someone through, which is outside the scope of my own survey. Assuming the wormholes are frequent and traversible in both directions?"
"Yes, but there's a limit on how much mass you can push through one before they start to destabilize: not only that, but finding this particular wormhole system again could be difficult."
"What's the mass limit? And difficult how? Does the same wormhole not always lead to the same place?"
"Only some wormholes are static: others wander. There's a mapping effort in progress, but I don't know which kind the one I came through was. As for the mass limit, give me a second... Low end of about 20 gigagrams per jump, high end of 1,800 gigagrams per jump: but if you do multiple jumps across the same wormhole, they compound. The highest recorded amount of mass a wormhole's been able to transmit before collapsing is in the vicinity of 5,000 gigagrams, but the low end is a tenth of that."
Isabella notes this all down. "I don't suppose you happen to know how to build an ansible and can tell me."
"No, but you can take home one of my scanning probes. They use regular light speed signals for triangulation, but they talk to me via ansible. Your scientists back home might be able to reverse-engineer it."
The capsuleer launches a small probe, which proceeds on laughably-slow impulse towards Isabella's ship.
It turns off its engines and coasts in to a stop, descending slowly to the floor of Isabella's cargo bay as if it were moving through a viscous liquid.
"So I suppose I'll carry this off and try to get it figured out while you mine your asteroids?"
"Can I use the ansible on it to talk to you in some straightforward way up until I have someone disassembling it?"
"It's not really designed for that sort of communications, but it has sensors on it and bits I can control, therefore we can use it to pass data. It does have a maximum range, though: once I go back through the wormhole you won't be able to hail me."
"I would guess about five light-years from a base station, but you can relay it as far as you want with no appreciable loss of speed: we have an interstellar comms web."
"I'll be more than five light-years away pretty quickly, so we'd better do any talking we're planning to do while I'm still in this system."
"I can maybe jury-rig a comms chain as far out as twenty light-years with the probes I have on me and some help from your magnificent drive, but if you're going any further than that you're probably correct."