The Star That Can't Exist

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The cosmos is littered with blue and red stars... but curiously no green ones. Why? Is this a fundamental constraint or merely an unlikely outcome? And what would it mean for humanity if we ever did detect a green star? Join us today as we explore this simple question with major implications.

Written & presented by Prof David Kipping

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THANK-YOU to our supporters D. Smith, M. Sloan, L. Sanborn, C. Bottaccini, D. Daughaday,A. Jones, S. Brownlee, G. Fulton, N. Kildal, M. Lijoi, Z. Star, E. West, T. Zanjonc, C. Wolfred, F. Rebolledo, L. Skov, E. Wilson, A. de Vaal, M. Elliott, B. Daniluk, M. Forbes, S. Vystoropskyi, S. Lee, Z. Danielson, C. Fitzgerald, V. Alexandrov, L. Macchia, C. Souter, M. Gillette, T. Jeffcoat, H. Jensen, F. Linker, J. Rockett, N. Fredrickson, B. Mlazgar, D. Holland, J. Alexander, E. Hanway, J. Molnar, D. Murphree, S. Hannum, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, F. van Exter, S. Roulier, M. Hammer, J. Swigo & A. Murphy.

::Music:: Music licensed via Creative Commons (CC) Attribution License (https://creativecommons.org/licenses/by/4.0/)

► Brad Hill - Of Love and Loss [https://open.spotify.com/album/2oDAnUfX0OYYOnuIToAEcX] ► Joachim Heinrich - Cassiopeia ► Falls - Life in Binary ► Chris Zabriskie - Cylinder Five ► Falls - Ripley ► Indive - Trace Correction

::Film/TV clips used:: ► Contact (1997) - Warner Bros. Pictures ► Avengers: Endgame (2019) - Walt Disney Studios Motion Pictures

::Chapters:: 00:00 Prologue 00:59 The Dearth of Green Stars 05:25 Sponsorship 06:28 The Blackbody Approximation 10:51 Entering the Multiverse 13:04 The Viridian Flash 14:46 A Green Technosignature 18:37 Concluding Remarks 19:27 Outro and credits

#NoGreenStars #Technosignatures #CoolWorlds