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Unraveling the Cosmos: Black Holes, Gravity Theories, and Planet Nine
In this thought-provoking Q&A episode of Space Nuts, host Andrew Dunkley and the ever-insightful Professor Fred Watson dive into a variety of compelling questions from listeners. They tackle the intriguing concept of the universe potentially being born inside a black hole, explore a new theory of gravity, and discuss the ongoing search for the elusive Planet Nine.
Episode Highlights:
- The Universe Inside a Black Hole: Listener Ash from Brisbane poses a fascinating question about the possibility of our universe being trapped inside a black hole and the implications of such a theory. Andrew and Fred Watson discuss the mechanics of black holes and what it would mean for our existence.
- A New Gravity Theory: Casey from Colorado asks about the latest advancements in gravity theories, prompting a discussion on the unification of quantum field theory and relativity, and the potential breakthroughs from Finnish researchers that could reshape our understanding of gravity.
- Understanding Hubble Tension: The duo explains the concept of Hubble tension, highlighting the discrepancies between two methods of measuring the universe's expansion rate and what this could mean for cosmology.
- The Quest for Planet Nine: Simon from New South Wales raises questions about the search for Planet Nine and the methods used to detect it, while Joe from Washington inquires about the limits of gravitational assists for interstellar travel, leading to a discussion on the practicality of such missions.
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Stay curious, keep looking up, and join us next time for more stellar insights and cosmic wonders. Until then, clear skies and happy stargazing.
(00:00) Welcome to Space Nuts with Andrew Dunkley and Fred Watson Watson
(01:20) Discussion on the universe inside a black hole
(15:00) New theory of gravity from Finnish researchers
(25:30) Explaining Hubble tension
(35:00) The search for Planet Nine and gravitational assists
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