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    "text": "This project originated from a public lecture I often gave on how mathematics underlied many of the basic measurements one makes in astronomy: terrytao.wordpress.com/2010/10/10/t... www.youtube.com/watch?v=7ne0...",
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        "title": "The Cosmic Distance Ladder (version 4.1)",
        "description": "This week I once again gave some public lectures on the cosmic distance ladder in astronomy, once at Stanford and once at UCLA.  The slides I used were similar to the “version 3.0” slid…"
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