[PIF]

In that time, we’ve not been visited by beings with faster-than-light ships—that we’re aware of. If that’s the case, we can pretty much know that nothing travels faster than the speed of light and we’re relatively safe from beings that are centuries distant.

---

A broadcast only give the direction of the broadcaster, not the location. There are millions of stars between us and a possible attacker; the attacker would have to send scouts along that line before locating the source. That’s the good news; the bad news is 3 unexplained extra-solar objects have already passed through our system.

[BenLurkin]

Rocks like Ohmomma have probably been spinning in and oit the somar system for billions of years. What’s to explain?

[BradyLS]

If there’s an FTL star-faring civilization out there, they could pick up our signal in one direction, communicate the bearing to other parts of their empire, and triangulate our location based on signals received (or not yet) in other parts of on other ships. They could narrow their search pretty quickly.

We could go silent. But we have decades of unregulated signals moving outward that could be picked up for a long time to help refine their search. IF there’s an FTL Star-faring civilization that spans systems out there.

And I’m aware of the possibility that we’ve already been found.

If aliens want to smear us, the sooner the better for them, I suppose. But I figure they already control local space and could be drawing on resources in other, “life-less” systems without needing to bother with ours. They’re observing us at their leisure before deciding what to do about us.