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Chancellor's Distinguished Professor of Physics at UC San Diego celebrates 250k subscribers on video platforms. Topics covered include time, temperature, and observer-dependent effects in relation to relativity. The discussion delves into the interconnection between different physical concepts like temperature and time.
Absolute zero temperature is discussed in connection to molecular motion and heat. The concept of absolute zero is examined, emphasizing that at absolute zero, there is no motion of molecules and, consequently, no useful heat that can be extracted despite having an infinite number of molecules conserving motion.
The story of losing the Nobel Prize is detailed, focusing on an experiment called BICEP. The discussion highlights the discovery of inflationary gravitational waves that was later retracted. The episode outlines the challenges and circumstances leading to the loss of the Nobel Prize nomination.
The conversation explores the study of dark energy and dark matter from microscopic and macroscopic perspectives. It delves into the significance of dissecting the intricacies of the microscopic realm to gain insights into the workings of the universe, while simultaneously broadening the context to understand the fundamental forces at play on a cosmic scale.
The podcast engages in intellectual discussions about determinism with experts like Sabina Hossenfelder and Stacy McGaugh. The viewpoints and debates on determinism, quantum mechanics, and free will are thoroughly examined, presenting a range of perspectives and insights in these complex philosophical concepts.
One potential solution to the Hubble tension involves the presence of magnetic fields in the early universe altering the sound horizon that leads to the cosmic microwave background (CMB) observations. By better modeling these magnetic fields, the discrepancy in the expansion rate of the universe measured at different ages could potentially be resolved.
The exploration of multiverses involves considering the possibility of parallel universes existing in conjunction with our own, potentially having different properties and behaviors. Physicists are actively examining theories such as string theory landscapes and inflationary cosmologies that support the existence of multiple universes with diverse characteristics.
Satellites like Starlink have raised concerns in the astronomical community due to their potential to cause light pollution and interference with observations. While efforts are made to mitigate the optical contamination, the emission of microwave radiation from such satellites remains a challenge, particularly for studies like cosmic microwave background (CMB) observations.
Ongoing studies in dark energy and dark matter could hold surprises for the future, especially with contributions from instruments like the James Webb Space Telescope (JWST). Exploring new viewpoints and insights into these cosmic mysteries may lead to significant advancements in our understanding of the universe.
Join my mailing list https://briankeating.com/list to win a real 4 billion year old meteorite! All .edu emails in the USA 🇺🇸 will WIN!
You know what's better than a 250k sub celebration?
Nothing!
I am immensely grateful for each and every one of you. Thank you so much for joining me on this journey. There is nothing I love more than engaging with all of you and sharing my passion for the impossible every day.
To celebrate and commemorate this crazy milestone, I've asked for questions on all my channels, and today, I'm going to answer them all!
So, without further ado, let’s get right Into the Impossible!
Key Takeaways:
00:00:00 Intro
00:01:37 Does time have any relationship with temperature?
00:07:18 On losing the Nobel Prize
00:14:07 How much do I get paid?
00:16:43 Why do we prioritize studying the minutiae?
00:22:35 How do we know that the CMB occurred 380,000 years after the Big Bang?
00:27:52 The greatest challenge of our educational system
00:36:04 Why I’m not convinced by determinism
00:41:52 The reality of podcasting and money
00:50:01 Is it time to stop taking Sam Harris seriously?
00:56:24 Problems in our educational system and the prestige of physics
01:08:30 How do I explain my work at cocktail parties?
01:11:56 Could gravity be massive?
01:15:00 Could the universe be an infinite multidimensional fractal?
01:24:43 Gravitational lensing
01:28:00 How many galaxies does the universe contain?
01:30:57 Joe Rogan’s mini-me?
01:36:37 Does dark matter even exist?
01:39:50 My favorite meteorites, Starlink and the Simons Observatory
01:43:29 Extra interdimensional beings?
01:48:30 Are there various ways to solve the Hubble tension?
01:54:50 Outro
Additional resources:
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➡️ Follow me on your fav platforms:
✖️ Twitter: https://twitter.com/DrBrianKeating
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✍️ Check out my blog: https://briankeating.com/cosmic-musings/
🎙️ Follow my podcast: https://briankeating.com/podcast
Into the Impossible with Brian Keating is a podcast dedicated to all those who want to explore the universe within and beyond the known.
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