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Terence Tao on the cosmic distance ladder 29 ደቂቃ 
Reptiles | 60 Minutes Full Episodes 52 ደቂቃ 
I Returned To The World's Most Polluted Country ( And Instantly Regretted It ) 37 ደቂቃ 
What’s really happening in the ocean’s “dark zones” 32 ደቂቃ 
How Switzerland Engineered the Perfect Country 44 ደቂቃ 
How Do Fossils Form?: Crash Course Geology #18 11 ደቂቃ 
Shouting at Stars: A History of Interstellar Messages 148 ደቂቃ 
Why isn't Congress doing more to protect America's food safety? 2 ደቂቃ 
Abandoned - Westminster Mall California 17 ደቂቃ 
How the Boeing 787 Works | Full Documentary 66 ደቂቃ 
Is there a Priest Hole in Your House? | Fascinating Horror Shorts 1 ደቂቃ 
Samsung Z Fold/Flip 8 Hands on - Fold ULTRA?? 17 ደቂቃ 
The Grid That Doubles the Strength of the Ground 19 ደቂቃ 
A COLD Knife is ok BUT this…. 17 ደቂቃ 
Последний Танец 🕺 (ARC Raiders) 22 ደቂቃ 
Recreating an Ancient Pump (with no moving parts) 14 ደቂቃ 
How Earthquake Bearings Work 19 ደቂቃ 
Inside Pakistan’s Most Dangerous City (surreal) 38 ደቂቃ 
Abandoned in Germany with $0 for 24 Hours (Man vs. Woman) 46 ደቂቃ 
Sapper's Tree 2 ደቂቃ 
How can you overcome writer’s block? 1 ደቂቃ 
Why Gravity Is A Lie, explained in Zero G 23 ደቂቃ 
Unhinged Lady Ran for Senate and Got Arrested for Wild Behavior 21 ደቂቃ 
The Dark Side of the World’s Lightest Structural Metal 16 ደቂቃ 
The Hardest Problem AI Ever Solved, with Google DeepMind CEO 66 ደቂቃ 
The Wild Story of the Teton Dam Failure 20 ደቂቃ 
The Age of Laser Warfare Has Begun 24 ደቂቃ 
Should you rinse your dishes before placing them in the dishwasher? - Rachel Yang 6 ደቂቃ 
These Are Some Wild Bodycams 12 ደቂቃ 
The Hidden Engineering of Floating Bridges 18 ደቂቃ 
How Taiwan is Preparing to Get Invaded 17 ደቂቃ 
Lily Gladstone Reads Comments 3 ደቂቃ 
Every US Electrical Outlet Explained 22 ደቂቃ 
The Pi Song 3.0 (Memorize 300 Digits Of π) 5 ደቂቃ 
What's Under Your Feet in New York City? 23 ደቂቃ 
We’ve just launched *five* new channels! #shorts 1 ደቂቃ 
Why does catnip make cats go crazy? - Jaap de Roode 5 ደቂቃ 
One Piece of News From Every Country in the World (Pt 2) 38 ደቂቃ 
Why do male nipples exist? 1 ደቂቃ 
How the Iran War Spiked Oil Prices 18 ደቂቃ 
Name That Infrastructure (Ep. 4) #shorts 1 ደቂቃ 
Flamethrower Underware! 12 ደቂቃ 
We Built a Snowman IN the Car 2 ደቂቃ 
Members have a think about this DOOR? 7 ደቂቃ 
How the Channel Tunnel Works 24 ደቂቃ 
Something’s Happening to the Ozone Hole 17 ደቂቃ 
Why This Olympic Sport Bothers Physicists 17 ደቂቃ 
Do Retention Ponds Actually Work? 18 ደቂቃ 
The hinge for 1/4Ton DOOR 1 ደቂቃ 
The right’s anti-Muslim midterms strategy 2 ደቂቃ 
100 Hours in Europe's Most Corrupt Country 34 ደቂቃ 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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