Terence Tao on Nostr: I made a post on the #CosmicDistanceLadder instagram about how Christmas in Australia ...
I made a post on the #CosmicDistanceLadder instagram about how Christmas in Australia is inverted in many ways from Christmas in the Northern hemisphere, and how the parallax differences were once important in climbing that distance ladder.
https://www.instagram.com/p/DEExnvvRkCQPublished at
2024-12-27 08:54:51Event JSON
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