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The asteroid's strange orbit may be the work of the gravity of an unknown planet.

The earliest known astronomical observatory in the Americas was built by an unknown culture, long before the Incas rose to power in Peru and began to celebrate their Sun God.

Scientists have come up with 12 hypotheses why we haven't detected signs of alien civilizations yet.

Scientists around the world have tried to unravel its contents, but none have succeeded. Now, technology promises to help solve this 600-year-old mystery.

In the days leading up to the Chernobyl disaster, workers at the nuclear plant claimed to have seen a creature known as the “Black Bird”.

In a new study, scientists have calculated that there may be 36 active intelligent civilizations in the Milky Way.

Our history books are continually being tested and challenged, but few discoveries have thrown a wrench into the officially accepted narrative of human’s origin like the DNA of Alfred Perry.

For more than a century, scientists around the world have tried to explain the phenomenon of the red-colored waterfall in Antarctica.