So /x/, was he right? Or was it just an assburgers' cry for attention?
Easily explained by: Hallucinations!
This is sort of on topic:
Back in late 90's, i was interested in UFO discussion groups because I thought there would be people reporting what they thought were UFOs but were actually high tech classified next generation stealth aircraft (since that's what happened with the NIghthawk and Spirit bomber aircraft). This was before I believed aliens could be real.
In Yahoo Groups there was a guy who posted a picture of what was the fractured surface of Europa, except that there was a clearly deliberately placed shape in the surface - a square bisected by a circle with a dot in the center.
The thing is, he linked to a place on nasa.gov where the picture was made public, so I believed that alien disclosure would be any day! Then, they removed the picture, but then the guy (or girl, I suppose) linked to the same pic on nasa.gov but in a different spot.
I was young and dumb back then, and though that if I saved a copy of the jpg, the government would know, and come get me. This was before I knew anything about computers, and I didn't know that by viewing a jpg on a website, the jpg was already downloaded into the browser's cache, so saving it wouldn't really look any different to the webserver.
Anyway, if anyone has this pic, and would like to share it, I would be much obliged.
Without the pic, they have plausible deniability, because, I have no evidence. And today, in 2016, they have plausible deniability, because, PhotoShop. So, either way, there's no real danger of the truth getting out.