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Right now, as you read this, you are traveling through space at over five hundred sixty thousand miles per hour on a cosmic merry-go-round so vast that light itself takes one hundred thousand years to cross from one edge to the other. We call this spinning island of four hundred billion stars our home. We call it the Milky Way. But we have never seen it from the outside. We have never stepped back to witness its true scale. Tonight, we will journey to the edge of our cosmic neighborhood and discover that everything we thought we knew about size, distance, and our place in space is just the beginning. If you enjoy this cosmic journey, hit that like button and come along. Prepare yourselves - we begin. Why you can never see your own house from space - but the view gets stranger The light in your room right now traveled further than Columbus ever sailed If Earth was a grain of sand, how big would your city be? Our sun is racing through space at 560,000 miles per hour - but where? The shocking discovery that we're not at the center of anything How astronomers first measured something one hundred thousand light years wide The invisible mass that makes up ninety-five percent of our galactic home Why Voyager spacecraft would need 1.7 billion years to cross our neighborhood The four hundred billion stars that share our cosmic address How long it takes our galaxy to complete one rotation - and why that matters The monster at our galaxy's heart that weighs four million suns Why we can only see our galaxy's edge from inside its disk The spiral arms that aren't actually attached to anything What happens when you zoom out and see our galaxy's true companions The dark matter halo that extends ten times further than visible stars How our galaxy wobbles like a spinning coin - and what's causing it The collision course we're on with our nearest galactic neighbor Why our galaxy is racing toward something called the Great Attractor The satellite galaxies being torn apart by our gravity right now How we discovered our galaxy has a hidden bar through its cnter The birth and end rate of stars across one hundred thousand light years Why our galaxy's outer edge keeps moving further than we thought possible The magnetic fields that thread through hundreds of thousands of light years How our galaxy compares to the two trillion others in observable space The cosmic web filament that our galaxy rides through the universe What our galaxy looks like from outside - and why we'll never see that view