On October 15, 1957, (Antonio Vilas-Boas) was ploughing fields near São Francisco de Sales when he saw what he described as a "red star" in the night sky. According to his story, this "star" approached his position, growing in size until it became recognizable as a roughly circular or egg-shaped aerial craft, with a red light at its front and a rotating cupola on top. The craft began descending to land in the field, extending three "legs" as it did so. At that point, Boas decided to run from the scene.
According to Boas, he first attempted to leave the scene on his tractor, but when its lights and engine died after traveling only a short distance, he decided to continue on foot.[7] However, he was seized by a 5-foot-tall (150 cm) humanoid, who was wearing grey coveralls and a helmet. Its eyes were small and blue, and instead of speech it made noises like barks or yelps. Three similar beings then joined the first in subduing Boas, and they dragged him inside their craft.
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Shortly after this, Boas claimed that he was joined in the room by another humanoid. This one, however, was female, very attractive, and naked. She was the same height as the other beings he had encountered, with a small, pointed chin and large, blue catlike eyes. The hair on her head was long and white (somewhat like platinum blonde) but her underarm and pubic hair were bright red.[8] Boas said he was strongly attracted to the woman, and the two had sexual intercourse. During this act, Boas noted that the female did not kiss him but instead nipped him on the chin.
When it was all over, the female smiled at Boas, rubbing her belly and gestured upwards.[9] Boas took this to mean that she was going to raise their child in space.