3blue1brown
3blue1brown
@3blue1brown·8.4M subscribers·238 videos

Terence Tao continuing history’s cleverest cosmological measurements

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February 23, 2025

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How we know the distances to the planets, stars, and faraway galaxies.

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Terry and his collaborator Tanya have an Instagram about the cosmic distance ladder

Artwork of Guillaume Le Gentil by Kurt Bruns

Artwork of Antonia Maury and Henrietta Leavitt by Talia Gershon

Several of the great cosmological animations where by Paul Dancstep

Timestamps:

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These animations are largely made using a custom Python library, manim. See the FAQ comments here:

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The music is by Vincent Rubinetti.

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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.

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Guests & Subjects Covered

Guillaume Le GentilKurt Bruns ArtworkAntonia MauryHenrietta LeavittTalia Gershon SeveralPaul Dancstep TimestampsThe Milky WayNearby Galaxies

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