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Alien mothership lurking in our solar system could be watching us …
A Mythical Form of Space Propulsion Finally Gets a Real Test
7 potential 'alien megastructures' spotted in our galaxy are not …
Has Earth been visited by an alien spaceship? Harvard professor …
Here's the scientific explanation for that 'alien spaceship' on Mars
Could fast radio bursts really be powering alien space ships?
Why Extraterrestrials Haven't Contacted Earth Yet | TIME
Astronomer Avi Loeb Says Aliens Have Visited, and He’s Not …
A Harvard Astrophysicist Says 'Oumuamua Could Be Alien - The Atlantic
How a Harvard Professor Became the World’s Leading Alien Hunter