#multiverse #cosmology #physics Making The Modern Multiverse: Brian Keating's book review of The Number of the Heavens: A History of the Multiverse and the Quest to Understand the Cosmos, Tom Siegfried, Harvard U. Press, 2019, $29.95 Buy at Amazon https://amzn.to/2RfNpL6 Physics Today, January, 2020 https://physicstoday.scitation.org/doi/full/10.1063/PT.3.4390 One of the liveliest scientific debates is whether our universe is unique. Unlike some controversies, the multiverse debate is highly interdisciplinary. Philosophers, theologians, and of course physicists all cling to entrenched positions about the multiverse’s reality. Perhaps no other topic than the multiverse has so clearly and passionately raised the question of what constitutes science. Into this debate comes The Number of the Heavens: A History of the Multiverse and the Quest to Understand the Cosmos by Tom Siegfried, the former editor-in-chief of Science News and author of three books including Strange Matters: Undiscovered Ideas at the Frontiers of Space and Time (2002). Despite his journalistic credentials, Siegfried is not a dispassionate observer or tour guide. He boldly asserts his opinions as he enumerates the many ways humanity has understood the multiverse from antiquity to today. Combining interviews of modern physicists and philosophers with a detailed historical narrative of ancient, medieval, and Renaissance interpretations of the word “world,” Siegfried’s text fills an important gap in the expanding body of multiverse literature. His approach to the multiverse is liberal: Possible multiverses have, at times, included other planets in our solar system, other stars in our galaxy, planets around other stars in our galaxy, other galaxies in our universe, and parallel universes in both space and time. Siegfried thus gives the interpretation of the multiverse a wide berth. However, only the parallel-universes interpretation is relevant to modern physicists. The Number of the Heavens is intended for a general audience. The book’s first two-thirds is replete with ancient conceptions of the multiverse—though clearly the ancient thinkers were usually considering other possibly habitable planets rather than multiple universes. Nowadays, no scientist or philosopher doubts the existence of such worlds, even Earth-like ones, whereas the evidence for multiple universes is as yet nonexistent. Siegfried sees the modern interpretation of the multiverse as an inevitable logical evolution of Copernican thought. Why would our universe be singular? Seven other planets aside from Earth populate our solar system alone, 100 billion or more suns are in the Milky Way, and a similar number of galaxies exist in the observable universe. Siegfried writes about many historical scientist ... https://www.youtube.com/watch?v=HySHScsq9rM

#NASA #SPACEX #Astronaut To change your orbit you must go faster! That is a lesson I learned from the phenomenal Nicole Stott -- an Inspiring Astronaut, Artist and American Hero! Nicole is our second astronaut guest on the podcast, following UCSD's own Dr. Jessica Meir: https://www.youtube.com/watch?v=y0-XvFTHAtU?sub_confirmation=1 Nicole is a role model for millions of children around the world. What speaks loudest to me about her, is her humanity and strong sense of giving back. She is a scientist with the soul (and heart) of an artist. Enjoy her unique creations here: https://www.npsdiscovery.com/artist Space for Art: https://www.facebook.com/pg/SpaceForArtFoundation/about/?ref=page_internal Edgar Mitchell once said “You develop an instant global consciousness, a people orientation, an intense dissatisfaction with the state of the world, and a compulsion to do something about it. From out there on the moon, international politics look so petty. You want to grab a politician by the scruff of the neck and drag him a quarter of a million miles out and say, ‘Look at that, you son of a bitch.” Nicole brings her space vistas down to earth so that more than just astronauts, and the occasional S.O.B., gets to experience them. Nicole is also an expert on mentorship, leadership and team dynamics. Her favorite phrase comes from Jay Hunicutt “Here’s how we can, not why we can’t!” With the right attitude, as a team, we can make things happen… don’t focus on what can go wrong…come with solutions not just problems. We discussed her biggest fears when she left earth and whether a superhero like her ever experiences imposter syndrome! Enjoy this article by my friend Cami Rosso "How Adventurer Nicole Stott became the First Astronaut to Paint in Space" https://medium-com.cdn.ampproject.org/c/s/medium.com/amp/p/94a6f3217ea6 ?‍♂️ Find Nicole on Twitter https://twitter.com/astro_nicole and on Instagram: https://www.instagram.com/astro_nicole/ ?Join my mailing list: http://briankeating.com/mailing_list.php to get resources, including some phenomenal images Nicole showed during our chat.  ?‍♂️ Watch my most popular videos: Eric Weinstein: https://youtu.be/YjsPb3kBGnk?sub_confirmation=1 Jim Simons: https://youtu.be/6fr8XOtbPqM?sub_confirmation=1 Noam Chomsky: https://youtu.be/Iaz6JIxDh6Y?sub_confirmation=1 Sabine Hossenfelder: https://youtu.be/V6dMM2-X6nk?sub_confirmation=1 Stephen Wolfram: https://youtu.be/nSAemRxzmXM  ?‍♂️ Find me on Twitter at https://twitter.com/DrBrianKeating ? Find me on Instagram at https://instagram.com/DrBrianKeating ? Buy my book LOSING THE NOBEL PRIZE: http://amzn.to/2sa5UpA ? Subscribe for more great content https://www.youtube.com/DrBrianKeating?sub_confirmation=1 ... https://www.youtube.com/watch?v=OzAJsQsI26c

Watch the Jordan Peterson Podcast episode: https://www.youtube.com/watch?v=o392_NrdflY Join this channel to get access to perks: https://www.youtube.com/channel/UCmXH_moPhfkqCk6S3b9RWuw/join ? Watch my most popular videos:? Neil Turok https://www.youtube.com/watch?v=Dt5cFLN65fI Frank Wilczek https://youtu.be/3z8RqKMQHe0?sub_confirmation=1 Eric Weinstein vs. Stephen Wolfram https://www.youtube.com/watch?v=OI0AZ4Y4Ip4?sub_confirmation=1 Sir Roger Penrose: https://youtu.be/AMuqyAvX7Wo Sabine Hossenfelder: https://youtu.be/g00ilS6tBvs Avi Loeb: https://youtu.be/N9lUceHsLRw Follow me to ask questions of my guests: ?‍♂️ Twitter: https://twitter.com/DrBrianKeating ? Subscribe https://www.youtube.com/DrBrianKeating?sub_confirmation=1 ? Join my mailing list; just click here http://briankeating.com/mailing_list ✍️ Detailed Blog posts here: https://briankeating.com/blog.php ?️ Listen on audio-only platforms: https://briankeating.com/podcast #universe #podcast #briankeating #intotheimpossible #science #astronomy #cosmology #cosmicmicrowavebackground #jordanpeterson ... https://www.youtube.com/watch?v=iy7rLPUslzQ

? Watch the full interview https://youtu.be/SNSH2FMgU9Y :? Be my friend: ?‍♂️ Twitter: https://twitter.com/DrBrianKeating ? Subscribe https://www.youtube.com/DrBrianKeating?sub_confirmation=1 ? Join my mailing list; just click here http://briankeating.com/mailing_list.php ✍️ Detailed Blog posts here: https://briankeating.com/blog.php ?️ Listen on audio-only platforms: https://briankeating.com/podcast.php A production of http://imagination.ucsd.edu/ Support the podcast: https://www.patreon.com/drbriankeating ... https://www.youtube.com/watch?v=MxXhxuzjBew