{"id":"126294594","service":"patreon","caption":"

In this week’s question show, Fraser explains how astronomers measure the spin rate of black holes, other uses of gravitational slingshots, and why everyone is talking about Patreon.

","captionHtml":"

In this week’s question show, Fraser explains how astronomers measure the spin rate of black holes, other uses of gravitational slingshots, and why everyone is talking about Patreon.

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","title":"Episode 383: QA 38: Measuring a Black Hole’s Spin and more. Featuring Andy Weir Author of the Martian","added":1793130409,"published":1512169952,"attachments":[{"position":0,"id":"490d4ecf-2a62-4e0d-adb4-1e593a7a638c","sha256":"80e7cfa5858dcab498a7beba7ae09dcd5b5accf8e2eb5fd5e6c3e0673b8f7142","kind":"image","mimeType":"image/jpeg","width":null,"height":null,"durationMs":null,"bytes":1366748,"storageKey":"80e7cfa5858dcab498a7beba7ae09dcd5b5accf8e2eb5fd5e6c3e0673b8f7142","variants":[{"name":"original.jpg","bytes":1366748}],"originalFilename":"1.jpg"},{"position":1,"id":"3eae2172-af2f-4b52-857f-9f28c385a58b","sha256":"4f1d970b9e683722285b105e5df747a11107b2df6ea974815846047e12b71e23","kind":"audio","mimeType":"audio/mpeg","width":null,"height":null,"durationMs":null,"bytes":21382146,"storageKey":"4f1d970b9e683722285b105e5df747a11107b2df6ea974815846047e12b71e23","variants":[{"name":"original.mp3","bytes":21382146}],"originalFilename":"1.mp3"}],"links":[],"tags":[],"comments":[],"prev":{"id":"15601729"},"next":{"id":"15676342"},"creator":{"name":"universetoday","displayName":"Fraser Cain"},"linked":[],"revisions":[]}