hahah, yeah, like we're gonna find out there's a piece of alien technology buried inside charon or something.
Idea for Sci-Fi novel. Man made wormholes are possible, but we don't have any true FTL travel. This means that humanity's expansion is limited to it's "light cone", at the time we get wormhole tech. What we don't realize is that there could be aliens limited by their own light cones, that by co-opting one of our wormholes they can essentially combine the two light cones into one, doubling their rate of expansion. This provides a hard-scifi setting where there can be a vastly technologically superior enemy, but where humanity still has a chance, as the initial wormholes act as natural choke-points and destroying them would stop the invasion.
A similar process is used in "Timelike Infinity" by Stephen Baxter.
His work generally uses this kind of extreme physics as plot devices and he's one of the best hard sf authors for this type of physics exploration.
It's an interesting idea. Though to be pedantic: this wouldn't double the rate of expansion for long, as soon as our light cones intersect once, their overlap will increase more and more in the future.
you should check out "The Expanse"
According to some highly accurate documentaries I've seen, Giza is a more likely place.