Bright stationary triangular object over Isère in 1984

Summary

On April 27, 1984, several witnesses in the Isère region reported a highly luminous triangular object that remained stationary in the sky for an estimated fifteen minutes to one hour and thirty-five minutes. The phenomenon was seen from two separate communes, lending some weight to the accounts. Two observers noted that the object ascended and gradually faded after a dense cloud of smoke appeared. No further details were collected.