We Might Discover 'Human' Aliens on Teegarden-b

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Here's how we might find human aliens on the exoplanet Teegarden b...

Teegarden b is the most earth-like planet ever found. It is 95% similar to earth, based on the Habitable Exoplanets Catalogue. But could humans already be living there? 

At 12.5 light years away, with current technology it would take 19,500 years to reach Teegarden b! But what if when we reach the planet, we find humans are already there?

Some Image Credits: NASA/ESA/JPL