1947 Roswell Metal Shard: ORNL Finds Terrestrial Origin, Casting Doubt on Extraterrestrial Technosignatures

To the point

ORNL’s assessment found the 1947 metal shard is terrestrial, likely produced in postwar magnesium‑alloy research for lighter aircraft, with isotope and crystal data discounting alien origins or biosignatures and making a true terahertz waveguide unlikely, while Avi Loeb notes that ruling out Earth origins strengthens the search for real technosignatures and To the Stars Academy still has questions.