How a twin Earth could detect Earth
A research team led by Dr. Sofia Sheikh of the SETI Institute, in collaboration with the Characterizing Atmospheric ...
Aliens could spot humans on Earth by clocking 12 signs – and top of the list exposes us to E.T 12,000 lightyears away
ALIENS could discover humans on Earth by spotting one of 12 signs, scientists say. Topping the list is a clue that could be ...