Have Aliens Contacted Earth

Have Aliens Visited Earth? | StarTalk 101 with Neil deGrasse Tyson

Have Aliens Contacted Earth? | Alien Contact: Outer Space Documentary

Absolute Sci-Fi

Best Evidence Proving Aliens Exist

Could Aliens Have Visited Earth in the Distant Past?

John Michael Godier

Brian Cox Debates If Aliens Have Visited Earth?

High Performance

Why Can't We See Evidence of Alien Life? | Documentary

What Will Humanity Do If We Ever Discover Aliens?

What Happens If We’re Contacted By Aliens? | Alien Documentary | Spark

Why Can't We See Evidence of Alien Life?

10 Reasons Aliens Might Not Contact Earth

John Michael Godier

Have Aliens Visited Earth? | Proof Of Alien Life

Physicist Brian Greene Has a Theory on Why Aliens Haven’t Visited Us

Neil deGrasse Tyson Doubles Down on Why Aliens Haven't Visited Earth (Part 28)

Have Aliens Visited Earth? | COLOSSAL MYSTERIES

Colossal Cranium

How Advanced Would Aliens Need to Be to Contact Earth?

The Wall Street Journal

Why Scientists Think Aliens Have ALREADY Visited Earth

Why Scientists Think Aliens Have Already Visited Earth | Unveiled

First 72 Hours After Aliens Make Contact (Hour by Hour)

The Infographics Show

10 Unpleasant Alien Civilization Scenarios

John Michael Godier

Brian Cox - Solving The Fermi Paradox: Intelligent Alien Life in Our Galaxy