This is my first question on the worldbuilding stack exchange, I discovered this place last night when double-checking that my world's river-carving-through-a-mountain-range is possible (it was, which is nice, very important storywise for the mountains to rule out economical transport except via this river or the parallel railway)
Anyhow, I couldn't see any question here which answers wormholes in the exact way I would need them to work in this world, though I saw quite a few interesting tidbits that do help me get my head around things a little bit...
POINT 1: Could wormholes be formed close enough to earth (and a similarly-sized planet in a similar star system 20+ ly away) to allow near-instantaneous communications?
Even earth-mars communications today (for rovers) are heavily lagged by many minutes, but I would like for the communications between these two peoples to be near-instantaneous, like a VOIP telephone call. Let's say, 5 seconds total delay between transmission, reception, and reply for a ping between the two computer nodes at either end.
Factors like response time may make people's calls take longer of course, but this much delay will be a nuisance but tolerable. It beats sending a series of damn intergalactic snapchat videos to communicate, being real-time makes things more authentic and enjoyable for communicating I guess?
POINT 2: possible to make a wormhole large enough to fit a person?
From the rest of my reading on this website, it seems that actually getting a spacecraft-sized wormhole, or even a wormhole large enough to fit a steel pipe for humans to crawl between two spaceships, would be basically impossible anytime soon given the energy requirements. These worlds are only slightly more advanced than today, in my lore the telecommunications portal opens in (current_year + 2 = 2025) so there's no super powerful dyson spheres or whatever to hold open such a portal.
EDIT: date is important. reral-world interactions with this new world is important.
Though, if it was possible to hold some wormholes open with a reasonable amount of power supply, I'd be fine with that wormhole being further away and thus requiring a months-long journey to get to the wormhole. The people on their way to the other planet need to be taught about local customs, language, and such anyway. Also time for them to learn hexadecimal maths. And a whole lot of other things.
Thank you everyone! If there is a mistake in my question, please tell me.
EDIT: my thinking was more that the other side invented it. They would've put a lot of effort into it ever since they learnt about Earth's existence (earth has been spewing out radio signals since the late 1800s) and have finally nailed it, and now wish to say hi. I'm not bothered about whether it's possible literally. Let's just say that the maths problems have been solved and it is now an engineering problem to get it done. Could a tiny wormhole terminus be safely placed in orbit around earth? Would it cause significant tidal forces? Could it deviate from the orbit and destroy