User blog comment:Gruntburner/Mass Effect 3 Achievements Revealed/@comment-2250460-20120204222732/@comment-1388547-20120205182032

Everything has an origin. I'd be a bit surprised if it's still possible to *discover* the Reapers' origin, given they're at least 37 million years old (Klendagon Great Rift Valley, derelict Reaper in ME2) and have a habit of erasing their tracks, but hey -- if the ME3 writers can come up with a plausible way for Shepard to discover it, I'd love to know.