Terence Tao on Nostr: My #CosmicDistanceLadder instagram with Tanya Klowden has a new post, on the ...
My #CosmicDistanceLadder instagram with Tanya Klowden has a new post, on the schoolbus-sized mini-moon 2024 PT5 that was briefly visiting Earth's gravitational well these past few months (and will return in 2055). Historically, such near-Earth asteroids were useful in constructing the distance ladder via parallax, although with modern radar ranging this method is largely obsolete (though still sometimes used in amateur astronomy projects).
Published at
2024-11-26 17:10:19Event JSON
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