According to Wikipedia, a strange 40 minute unidentified flying object or an unexplainable phenomena occured on June 22, 1976 in the Canary islands. The phenomena (object) was observed in multiple locations including Tenerife, La Palma, La Gomera, Grand Canary and by a ship at sea. Moroever, the UFO was witnessed by several hundred people, including both civilian and military personnel.
An image of what appears to be attached to several articles alleged that the following photo was the UFO or phenomena observed
Some websites relating this photo with the event are:
The newspaper above (though I couldn't find it elsewhere) claims that the image above (also claiming that it was during the event that occurred) were that of a UGM-73 Poseidon missile (https://en.wikipedia.org/wiki/UGM-73_Poseidon) but after searching again about these missiles on that day of the event on google I came up with nothing. Another low-resolution image of the headline of a newspaper is shown below:
(1) Is this image truly part of the alleged UFO (or some visual phenomena) that occured on June 22, 1976 in the Canary islands?
(2) If the answer to (1) is no, I would hope for some more context on the origin of this photo or whether it might be a simple photoshop.