How big is the Milky Way galaxy? In this video, discover the true scale of our cosmic home—from its 100,000+ light-year diameter and hundreds of billions of stars, to its massive dark matter halo and supermassive black hole at the center.
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AND THIS OTHER VIDEO IS A MUST-WATCH: https://youtu.be/_hba-BOWyZk?si=lIFnoneZMz6Ci8-D

00:00:00 - How Fast Are You Moving Through the Galaxy?
00:03:30 - The True Size and Shape of the Milky Way
00:07:00 - Shrinking the Solar System: Mind-Blowing Scale
00:10:30 - Gaia’s 3D Map and the Warped Galactic Disc
00:14:00 - The Dark Matter Halo: Most of the Galaxy Is Invisible
00:17:30 - The Supermassive Black Hole at the Galactic Center
00:21:00 - How Many Stars Are in the Milky Way?
00:25:00 - Spiral Arms, Star Formation, and the Orion Spur
00:29:00 - Galactic Archaeology: Streams, Mergers, and Ancient Stars
00:33:00 - Globular Clusters and the Oldest Stars
00:37:00 - The Galactic Bar, Bulge, and Star Formation History
00:41:00 - The Milky Way’s Violent Past: Collisions and Cannibalism
[00:45:00 - The Dark Side: Black Holes, Neutron Stars, and Cosmic Rays
00:49:00 - Our Place in the Galaxy: The Habitable Zone
00:54:00 - The Milky Way’s Future: Collision with Andromeda and Beyond


Learn how missions like Gaia, Hubble, and Spitzer have revolutionized our understanding of the Milky Way’s size, structure, and history. Explore the galaxy’s spiral arms, star-forming regions, ancient globular clusters, and the incredible journey of our solar system as it orbits the galactic center. Find out how dark matter, black holes, and galactic mergers shape the Milky Way, and why our position in the galaxy is so special for life. If you’re fascinated by astronomy, space, and the mysteries of our galaxy, this is the ultimate guide to the Milky Way’s true size and your place within it. So How BIG is the Milky Way?

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