Lorewarn
Active member
The easiest thing to send to another planet is a probe. We've done it, and we've already flown on another planet. If other life wanted to explore Earth, this is what they'd do.
Most likely, though, is that it's our tech. DARPA products or something like that. If someone would have seen the SR-71 when it first flew, the would've thought it was aliens. Same with the stealth fighter.
The articles all say it would require some crazy breakthrough for it to be from Earth. The simplest, and most likely, explanation is that it's a new kind of drone.
Not saying you're wrong, but SR-71, the stealth fighter, and predator drones all still use fuel and an engine that generates thrust and acceleration. If (possibly a big if, who knows) the accounts of many military personnel who have seen these things are reliable, many of them have no thermal readings, no exhaust, and have no momentum or acceleration when they move. That makes it unique and hard to imagine it's just further down the line of refining technology and is something completely different.