3Blue1Brown

In the recent videos I made with Terence Tao about the cosmic distance ladder, we necessarily had to move past some of the added details on each topic. Somewhat coincidentally, around the same time, Ben Syversen put up a video with the mathematician Alex Kontorovich all about the contributions Aristarchus made, involving the deductions of how far away the moon and sun were. If you liked the cosmic distance ladder piece, you'll definitely enjoy this one, and it answers many questions I saw people ask in the comments.

5 months ago | [YT] | 1,224



@kenwarner

Love to see YouTubers (in related niches especially) shouting each other out.

5 months ago | 66

@mikeallison5549

Thank you! Your last two videos were my favorite math YT videos I’ve seen (and I’ve seen a lot). Carl Sagan’s Eratosthenes segment was one of my favorite parts about the Cosmos series, so these were right up my alley.

5 months ago | 5

@bensyversen

Wow, thank you for the very kind shout out!

5 months ago | 34

@nikomarmanis7705

I know you wouldn’t without a plan of guests and topics, but PLEASE bring back the podcast. Your conversations with Sal Khan and Steven Strogatz were pure magic

5 months ago | 9

@HapeFS

There is also this beautiful pair of video’s by Welch Labs about Kepler’s discoveries.

5 months ago | 0

@Linkzcap

worth mentioning there will be a total lunar eclipse visible across all of North America this Thursday night (March 13, 2025)

5 months ago (edited) | 2

@therecogniser2122

Please explain Kakeya set proof.

5 months ago | 0

@anshulsuri5619

A great topic I feel that would be awesome in your style of videos is spectral submanifolds. Not sure if that is something you would be interested in.

5 months ago | 0

@bman5257

“Somewhat coincidentally”. Was there a way in which it was somewhat not coincidental?

5 months ago | 3

@Trailerpark-sodapop

Katie let DAMION see his baby

5 months ago | 1

@biswajeet9826

Wasn't it Aryabhatta who did it like 400+ CE like something...

5 months ago | 0

@vc15ma

Cosmic coincidence?

5 months ago | 1

@adityaagarwal636

I love you guys.

5 months ago | 0

@JM-us3fr

What I coincidence! I just watched his video before I saw your post 😄

5 months ago | 2

@JaspreetSingh-hm6tk

Hi sir I am learning data science and machine learning by online sources but I don't have a degree related to data science or BCA will I get a job without a degree 😢😢

5 months ago | 0

@Noneofyourbusiness2000

Unsubscribed.

5 months ago | 0