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Terence Tao on the cosmic distance ladder 29 min 
Reptiles | 60 Minutes Full Episodes 52 min 
I Returned To The World's Most Polluted Country ( And Instantly Regretted It ) 37 min 
What’s really happening in the ocean’s “dark zones” 32 min 
How Switzerland Engineered the Perfect Country 44 min 
How Do Fossils Form?: Crash Course Geology #18 11 min 
Shouting at Stars: A History of Interstellar Messages 148 min 
Why isn't Congress doing more to protect America's food safety? 2 min 
Abandoned - Westminster Mall California 17 min 
How the Boeing 787 Works | Full Documentary 66 min 
Is there a Priest Hole in Your House? | Fascinating Horror Shorts 1 min 
Samsung Z Fold/Flip 8 Hands on - Fold ULTRA?? 17 min 
The Grid That Doubles the Strength of the Ground 19 min 
A COLD Knife is ok BUT this…. 17 min 
Последний Танец 🕺 (ARC Raiders) 22 min 
Recreating an Ancient Pump (with no moving parts) 14 min 
How Earthquake Bearings Work 19 min 
Inside Pakistan’s Most Dangerous City (surreal) 38 min 
Abandoned in Germany with $0 for 24 Hours (Man vs. Woman) 46 min 
Sapper's Tree 2 min 
How can you overcome writer’s block? 1 min 
Why Gravity Is A Lie, explained in Zero G 23 min 
Unhinged Lady Ran for Senate and Got Arrested for Wild Behavior 21 min 
The Dark Side of the World’s Lightest Structural Metal 16 min 
The Hardest Problem AI Ever Solved, with Google DeepMind CEO 66 min 
The Wild Story of the Teton Dam Failure 20 min 
The Age of Laser Warfare Has Begun 24 min 
Should you rinse your dishes before placing them in the dishwasher? - Rachel Yang 6 min 
These Are Some Wild Bodycams 12 min 
The Hidden Engineering of Floating Bridges 18 min 
How Taiwan is Preparing to Get Invaded 17 min 
Lily Gladstone Reads Comments 3 min 
Every US Electrical Outlet Explained 22 min 
The Pi Song 3.0 (Memorize 300 Digits Of π) 5 min 
What's Under Your Feet in New York City? 23 min 
We’ve just launched *five* new channels! #shorts 1 min 
Why does catnip make cats go crazy? - Jaap de Roode 5 min 
One Piece of News From Every Country in the World (Pt 2) 38 min 
Why do male nipples exist? 1 min 
How the Iran War Spiked Oil Prices 18 min 
Name That Infrastructure (Ep. 4) #shorts 1 min 
Flamethrower Underware! 12 min 
We Built a Snowman IN the Car 2 min 
Members have a think about this DOOR? 7 min 
How the Channel Tunnel Works 24 min 
Something’s Happening to the Ozone Hole 17 min 
Why This Olympic Sport Bothers Physicists 17 min 
Do Retention Ponds Actually Work? 18 min 
The hinge for 1/4Ton DOOR 1 min 
The right’s anti-Muslim midterms strategy 2 min 
100 Hours in Europe's Most Corrupt Country 34 min The Cosmic Distance Ladder: How we learned distances in the heavens. Next part: https://youtu.be/hFMaT9oRbs4 Patreon supporters see early views of new videos: https://www.patreon.com/3blue1brown Artwork by Kurt Bruns Thanks to Paul Dancstep for several animations, such as the powers of 10 zoom out and the simulations of shadows on the moon. Terry has kindly cataloged many of the added nuances, including a few corrections, in this post: https://terrytao.wordpress.com/2025/02/13/cosmic-distance-ladder-video-with-grant-sanderson-3blue1brown-commentary-and-corrections/ As an additional one, the portrait shown for Kepler, despite being somewhat widespread, actually turns out not to be Kepler. See this article by Václav Pavlík https://ui.adsabs.harvard.edu/abs/2021PhT....74i..10S/abstract Also, although the Earth is about 4 times as wide as the Moon, as it happens, you would not see this with the lunar eclipse composites, since the umbra of Earth's shadow from the sun is sufficiently smaller than the Earth out where the Moon is. Moon composite shot by Reddit user _wanderloots: https://www.reddit.com/r/astrophotography/comments/yil0tu/partial_lunar_eclipse_composite/ https://youtube.com/@Wanderloots Thanks to Tanya Klowden for helpful conversations about the history of the distance ladder. Argument for why if every shadow of a convex shape is a circle, it must be a sphere: https://mathoverflow.net/questions/39127/is-the-sphere-the-only-surface-with-circular-projections-or-can-we-deduce-a-sp Timestamps: 0:00 - About Terence Tao and the Distance Ladder 2:02 - Earth 8:07 - Moon 11:15 - Sun 15:45 - Heliocentrism in Antiquity 18:27 - Kepler’s genius 27:16 - Where this leaves us SEV #5: https://youtu.be/uq83hprtpGE ------------------ These animations are largely made using a custom Python library, manim. See the FAQ comments here: https://3b1b.co/faq#manim https://github.com/3b1b/manim https://github.com/ManimCommunity/manim/ All code for specific videos is visible here: https://github.com/3b1b/videos/ The music is by Vincent Rubinetti. https://www.vincentrubinetti.com https://vincerubinetti.bandcamp.com/album/the-music-of-3blue1brown https://open.spotify.com/album/1dVyjwS8FBqXhRunaG5W5u ------------------ 3blue1brown is a channel about animating math, in all senses of the word animate. If you're reading the bottom of a video description, I'm guessing you're more interested than the average viewer in lessons here. It would mean a lot to me if you chose to stay up to date on new ones, either by subscribing here on YouTube or otherwise following on whichever platform below you check most regularly. Mailing list: https://3blue1brown.substack.com Twitter: https://twitter.com/3blue1brown Instagram: https://www.instagram.com/3blue1brown Reddit: https://www.reddit.com/r/3blue1brown Facebook: https://www.facebook.com/3blue1brown Patreon: https://patreon.com/3blue1brown Website: https://www.3blue1brown.com
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