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Astronomers Say Aliens May Already Know of Humans

Part of space exploration is the search for alien life to answer whether or not we are alone in the Universe. Although we have yet to find an alien civilization somewhere out there, some astronomers have argued that aliens may already be aware of our existence.

The argument was made by scientists Lisa Kaltenegger from Cornell University and Joshua Pepper from Lehigh University. They suggested that because space agencies and astronomers have already found a way to notice exoplanets in the Universe, the same could be said for alien civilizations who may already be aware of our existence.

The Habitable Zone

Kaltenegger and Pepper​ have discovered 1,004 stars that are similar to our Sun. Rotating around these thousand stars are other planets like Earth, located in the so-called ‘habitable zone’ with proper conditions for life to thrive, or most vitally, liquid water.

These stars are all within 300 light-years away from Earth, and the planets rotating around these stars would have a line of sight to our planet. This implies that aliens may also be looking on our home planet for signs of life.

“Let’s reverse the viewpoint to that of other stars and ask from which vantage point other observers could find Earth as a transiting planet,” argued Kaltenegger. “If observers were out there searching, they would be able to see signs of a biosphere of our Pale Blue Dot. And we can even see some of the brightest of these stars in our night sky without binoculars or telescopes.”

Aliens on Mars and Europa

In the meantime, private space agencies, including Elon Musk‘s SpaceX, are preparing to launch their space missions. Musk also commented on the search for alien life that numerous agencies are already doing and revealed where he believes is the best place to discover it.

Even though Musk emphasized that he believes humans are probably the only living beings in the Universe or at least in our Solar System, the most likely place to find alien life would be under the surface of Mars and below the icy surface of Jupiter’s moon, Europa.

Musk’s comments is not a new response to this matter as other astronomers have mentioned the possibility of finding life on Europa and the Red Planet.

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