2 Trillion Galaxies? The Mind-Boggling Scale of the Universe Explained
Are We Alone In The Galaxy?
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"Why we might be alone" Public Lecture by Prof David Kipping
The Stars In The Milky Way Galaxy & Beyond
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How Many Alien Civilizations Exist in Our Galaxy?
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How Big is The Universe?
How the Universe is Way Bigger Than You Think
Scientists Discover Planets More Habitable Than Earth
How Big is Our Galaxy? - The Milky Way
The Scariest Fact about The Universe
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How Many Planets in the Milky Way Can Have Life?
How Sun's Lost Twin Is Still Affecting The Solar System
How will The Universe end?
Are We the First Intelligent Life in our Galaxy? with David Kipping
Brian Cox - Solving The Fermi Paradox: Intelligent Alien Life in Our Galaxy