Albert Einstein was given a guided tour of a flying saucer after it crashed at Roswell, it has been claimed.
The iconic physicist - famed for his E = mc2 formula on mass and energy - also got to see an alien autopsy, according to his former assistant.
Dr Shirley Wright said she accompanied him on the top-secret trip to the desert in New Mexico, US.
She detailed what they saw in a series of tape recordings made shortly before her death in 2015, and only made public now.
Dr Wright said the alien craft - which reportedly crashed in July 1947 - appeared damaged on one side.
She added: "It was disc shaped, sort of concave. Its size stood up to one fourth of the hangar floor.
"The body of the ship was what I would call today a rather reflective material but when you got up close to it, it was rather dull.
"They were very curious about what the materials were."
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