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A weather camera picked up this peculiar anomaly on Sunday night and nobody can agree on what it is.
Following its visit to Pluto back in 2015, the spacecraft has been on its way to Kuiper belt object MU69.
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Scientists have come up with an alternative explanation for the peculiar orbits of some distant objects.
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The document goes in to more detail about a strange object that was pursued by two fighter jets back in 2004.
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A small solar system object with a strange orbit has hinted at the presence of a large, unknown world.
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Two separate airliners encountered an unknown object while flying over the Arizona desert in February.
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A recently declassified video shows a US Navy jet tracking a fast-moving object along the East Coast.
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NASA's New Horizons probe has made history again by capturing images 3.79 billion miles from the Earth.
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An acoustic tractor beam could make it possible to levitate large objects within the not-too-distant future.
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Government officials have been offering conflicting answers to questions about the program's objectives.
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A young schoolboy from Syria has acquired the remarkable ability to magnetically attract objects.
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A former Navy pilot has come forward to describe his encounter with a strange object back in 2004.
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An asteroid thought to have come from another solar system is to be checked for signs of alien technology.
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A man in India with suspected food poisoning was found to have 5kg of metal objects inside his stomach.
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Back in October, aviation authorities investigated an unidentified aircraft flying over the West Coast.
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A video allegedly recorded by a fighter jet based on the carrier USS Nimitz has surfaced online recently.
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For the first time ever, astronomers have spotted what is thought to be a visitor from a distant star system.
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Known as Florence, the 2.7-mile asteroid is the largest near-Earth object ever recorded by NASA.
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The peculiar aerial phenomenon was captured on camera by Jeremy Le Fevre on Saturday evening.
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The next target of NASA's New Horizons probe is a space rock with some rather intriguing properties.