How Huge Is the Universe? An Answer You Won't Be Able to Believe

Aug 21, 2026
We start with something familiar, our own planet, and climb the scale of the universe step by step, from the Sun to the edge of the solar system, past the nearest star, through our galaxy, and out to the largest structures ever measured. This video also tackles what most videos on this topic get wrong, including the actual, disputed science behind "the biggest star" and how many galaxies really exist.
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Cosmic Signal
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