UFO seen near Martha's Vineyard in 1957

Summary

A civilian observer described a spherical object with antenna-like protrusions moving unnaturally near Martha's Vineyard, Massachusetts, in 1957. The object, seen from a boat, hovered, ascended, and changed direction. Though initially perceived as potentially hostile, the investigation concluded it was likely a balloon with radar reflectors. The data aligned with experimental balloon tests in the area, and no unusual radar or aircraft activity was recorded. Descriptions varied between cylindrical and spherical, but analyses pointed to a conventional explanation.