Sightings of alleged unidentified flying objects, or UFOs, are usually united by a common element: they are visually witnessed by an unsuspecting person, who may or may not be able to fumble for a camera to get a so-so image.

But what if we didn’t have to rely on blurry photos, grainy videos, and dicey testimony of strange sights? What if we could detect and track possible alien visitors?

That’s the question in pursuit by the ambitious group of UFOlogists behind the UFO Data Acquisition Project (UFODAP).

They already have sensors in places like the famous “Skinwalker Ranch” in Utah and the San Luis Valley in Colorado, and they’re in the process of finding sites in UFO hot spots like Oscura Peak, New Mexico and Chestnut Ridge, Pennslyvania — places where historic sightings or other reported weirdness have taken places.

The plan unites the worlds of amateur astronomy and flying saucers — and may provide what’s evaded the world of UFO investigation: hard data.

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