Alien pointing into the distance with curiosity.

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Moonwalker and Apollo 12 team member  Alan Bean says he doesn't believe Earth has been visited by aliens.   Bean tells an Australian news site that if we have been visited by  aliens, they'd be an advanced species that would have already landed and  announced they come in peace.  Bean goes further saying aliens would  likely already have cures for cancer and other maladies.  Bean does  believe there is life on other planets and that someday earthlings will  reach those planets far into the future.