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b'Astrophiz 43 \\u2013 Cassini\\u2019s Legacy.\\nAs one of 30 very lucky Astrogeeks, Andrew P Street was a guest of the Canberra Deep Space Communications Complex on Friday 15 September 2017 to witness first hand the #GrandFinale of the astonishing 20 year Cassini Mission to Saturn.\\n\\nIn this episode:\\nWith permission, we read Andrew P Street\\u2019s great article published in the Guardian the next day. \\n\\nThen Dr Ian Musgrave and I discuss my awed impressions of this amazing night at Tidbinbilla CDSCC as a guest of CSIRO/NASA, and my new understanding of the importance and capabilities of the 3 NASA/JPL Deep Space Network earth stations at Goldstone USA, Madrid Spain and Tidbinbilla Australia. Ian recounts some of Cassini\\u2019s iconic achievements.\\n\\nFor observers and astrophotographers, Ian continues with \\u2018What\\u2019s Up Doc\\u2019 and tells us when, where and what to look for in morning and evening skies. In Ian\\u2019s Tangent, Ian helps us understand why the end of the Cassini Mission was such an emotional event compared with other famous missions.\\n\\nFor Aurora Hunters, we include the spooky sounds of Saturn\\u2019s aurorae, as captured by Cassini.\\n\\nIn the news:\\n1. In many previous episodes we have talked about how the sheer enormity of radio telescope data caches presents challenges for effective analysis. Today we quote from a review of the \\u2018 Big Data Boom\\u2019 in Nature Astronomy by Professor Ray Norris, School of Computing, Engineering, & Maths, Western Sydney University.\\n\\n2. We report on the May 2018 launch of the NASA InSight Mission to Mars\\n\\n3. A game-changing discovery by a Japanese team reveals Black Hole evolution.'