Weekly Space Hangout - Hipparchus’ Lost Star Catalog with Dr. Victor Gysemberg

<p><a href= "https://youtu.be/k7GpdIsuetA">https://youtu.be/k7GpdIsuetA</a></p> <p><strong>Streamed live on Nov 23, 2022.</strong></p> <p><strong>Host:</strong> Fraser Cain ( <a href= "https://twitter.com/fcain">@fcain</a> )<br /> <strong>Special Guest:</strong> Greek astronomer Hipparchus, who lived in the second century BCE, is considered to be the greatest astronomical observer of his time. Among his achievements are the development of trigonometry, the ability to predict solar eclipses, discovering and measuring the precession of the equinoxes, and, in approximately 135 BCE, the compilation of the first comprehensive star catalogue in the western world. Since that time, scientists have spent centuries searching for Hipparchus' Star Catalogue, but it disappeared and has never been found.</p> <p> </p> <p><strong><em>Or has it?</em></strong></p> <p> </p> <p>In 2017, researchers used multispectral imaging and computer algorithms to examine an ancient manuscript that had been discovered in a Greek Orthodox monastery in Egypt in 2012. The resulting images not only uncovered astronomy-related writings (e.g., Eratosthenes’ star-origin myths [<a href= "https://www.youtube.com/redirect?event=video_description&redir_token=QUFFLUhqbGZvT2VaZm5FcGtZMjhUTF84SVo3dVRHTUZRd3xBQ3Jtc0tuSHdxNm41dEMzbVVPTkFJaFI1TVE2SmhESXpjRFFQQjJGNF96X1V1OUhwZHVENjR2aG1KaW03VkdDdVVCTVhzR292bnQtdl9EMWFrV0FJU2M5X1JZdkhPdncybUg1SVBkRjhtQmJkQ0JsUUFFUGZ5VQ&q=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FCatasterismi&v=k7GpdIsuetA">https://en.wikipedia.org/wiki/Cataste...</a>] and the third-century poem Phaenomena [<a href= "https://www.youtube.com/redirect?event=video_description&redir_token=QUFFLUhqbnlBZnlmbW5nR2lrVjZBdnBxNkhPZkxMYzVjZ3xBQ3Jtc0ttLURfbHctZEdoOGQ4X0FYd19kcW1TZ2padjlxWHFxc1FacHdLN2FXR0dIa2cyaUJGVHZTN09qSEphZ0pLQUFoc0NmWjJNNENCZmdQRFo2SnFhVndmOVJuZlBuZmI3ZXoyWlBrbVE2TFhsTzVWMjdJdw&q=https%3A%2F%2Fwww.britannica.com%2Ftopic%2FPhaenomena-by-Aratus&v=k7GpdIsuetA">https://www.britannica.com/topic/Phae...</a>] about the constellations,) but also hi