Oumuamua was the first interstellar object humankind ever discovered and it was such a momentous discovery, some scientists were even wondering if it could be an alien spaceship. That was only in 2017, but just two years later astronomers discovered another ISO, this time a comet. Now some scientists are saying there are likely many more interstellar travelers in our solar system, but rather than simply passing through, they may have stayed and made a new home.
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