Could aliens have been watching Earth for millennia?

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00:03we're often searching the sky looking for signs of life imagining little gray beings being zapped

00:08up by tractor beams but what if aliens have been watching us instead that's what a new study by

00:13researchers at cornell university say could be the case as they've identified 1715 nearby star

00:20systems within 326 light years away each with exoplanets circling them which could have

00:25potentially caught a glimpse of our planet they determined that when the earth passes in front

00:29of the sun we're backlit and that could give aliens on distant planets data on earth in fact that's

00:33the same way astronomers currently discover planets in distant galaxies as well by examining the way

00:38in which the light and cosmic data shifts as the planet passes in front of their own star here's

00:43what lisa kultenegger director of cornell's carl sagan institute and professor of astronomy had to

00:47say about the findings our analysis shows that even the closest stars generally spend more than

00:521 000 years at a vantage point where they can see earth in transit if we assume the reverse to

00:56be

00:56true that provides a healthy timeline for nominal civilizations to identify earth as an interesting

01:01planet what's more earth will come into view of 319 additional star systems over the next 5 000 years

01:08planet has an incredible planet in the east coast of west west west west west west west west west west

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