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The 75-year-old spoke of a potential 'mass landing' and believes the discovery may in fact be communications of superior beings from space.
He wrote on an Instagram post: "My dear friends, A team mapping radio waves in the universe has discovered something unusual that releases a giant burst of energy three times an hour.
"It's unlike anything astronomers have seen before.
"No doubt in my mind that this is connected to alien intelligence way way superior than ours.
"Start deciphering their messages! They are preparing us for a mass landing soon!"
He then hashtagged NASA in the post.
Scientists said it's the first time they've discovered anything like the apparent energy source before.
Some believe it could be a neutron star or a white dwarf with a powerful magnetic field.
Curtin University's astrophysicist Dr Natasha Hurley-Walker was one of the scientists who first witnessed the phenomenon.
She said: "This object was appearing and disappearing over a few hours during our observations.
"That was completely unexpected.
"It was kind of spooky for an astronomer because there’s nothing known in the sky that does that.
"And it’s really quite close to us - about 4,000 light years away. It’s in our galactic backyard."
Dr Natasha personally believes the energy source is an ultra-long period 'magnetar'.
She described it to the Mirror as a type of slowly-spinning neutron star predicted to exist only theoretically... sorry?
"Nobody expected to directly detect one like this because we didn’t expect them to be so bright," she said.
"Somehow it’s converting magnetic energy to radio waves much more effectively than anything we’ve seen before."
Bizarrely, only last month Uri claimed to know about imminent alien contact with mankind.
He told the Sun: "They will probably land on the White House lawn or somewhere.
"All our science fiction films about alien encounters will come true.
"I don’t think we are talking about thousands or even hundreds of years. If I had to guess, a rational and logical guess, I would say 60 to 75 years it’s going to happen.’’
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