WATCH: Historian claims there's 'no reason aliens wouldn't have made contact' with Earth
Scientists have made a potentially ground-breaking discovery on distant exoplanet K2-18b
Historian Tony McMahon has voiced his firm belief in extra-terrestrial life, claiming there's "no reason aliens wouldn't have made contact" with Earth.
His comments come as scientists have made a potentially ground-breaking discovery on distant exoplanet K2-18b, which some experts believe could indicate the presence of alien life.
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