A mysterious glowing object spotted over New Jersey skies Tuesday night, Aug. 12, had locals buzzing — but it wasn’t a UFO.

The spiral effect seen in the sky over western Mass. on Tuesday night was likely caused by the Vulcan Centaur rocket launch ...

According to Jesse Rogerson, an astrophysicist and assistant professor at York University, the object was a “spent stage” of a Vulcan Centaur rocket that launched from Cape Canaveral, Fla., Tuesday ...