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Cosmic Queries: The Big Crunch, Gravitational Waves, and Planetary Cores
In this engaging Q&A episode of Space Nuts, hosts Andrew Dunkley and Professor Jonti Horner explore a variety of thought-provoking questions from listeners. Delving into the mysteries of the universe, they tackle topics such as the Big Crunch, the nature of gravitational waves, the implications of shifting magnetic poles, and the intriguing composition of gas and ice giants.
Episode Highlights:
- The Big Crunch and Light: Andrew and Jonti discuss the concept of the Big Crunch, examining how light and energy would behave as the universe contracts. They explore the potential for a reverse Big Bang scenario and the scientific implications of such a cataclysmic event.
- Gravitational Waves Interference: Listener Bob poses a fascinating question about what happens when gravitational waves intersect. The hosts explain the interference patterns that could arise and the complexities involved in understanding these phenomena, especially in the context of current gravitational wave detection technology.
- Shifting Magnetic Poles: Paddy's query about the behavior of Earth's magnetic field during a pole flip leads to a discussion on the historical occurrences of geomagnetic reversals and their effects on the planet. Andrew and Jonti clarify misconceptions and provide insights into the potential impacts on technology and life on Earth.
- Richie Cores of Gas and Ice Giants: Martin's inquiry into the composition of gas and ice giants prompts a deep dive into planetary formation theories. The hosts discuss how scientists determine whether these planets have rocky cores and what alternative structures might exist within them, shedding light on the complexity of our solar system.
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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.

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