#438: Gravitons' Mysteries & The Sun's Hidden Twin

Space Nuts

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Space Nuts Q&A: Gravitons, Dark Matter Twins, and Time Dilation Mysteries
Join Andrew Dunkley and Professor Fred Watson in this engaging Q&A episode of Space Nuts, where they tackle listener questions about some of the most intriguing concepts in the universe.
Episode Highlights:
- Gravitons and Gravity: Gus from Issaquah, Washington, poses a thought-provoking question about the relationship between energy, mass, and gravity. Fred delves into the hypothetical particles known as gravitons and discusses their potential mass and the implications for our understanding of the universe.
- Dark Matter Twin: Rich from the UK suggests an intriguing idea: could our sun have a dark matter twin? Fred explores the plausibility of this concept and how it relates to the mysterious Planet Nine and the nature of dark matter.
- Time Dilation and the Early Universe: Sean from British Columbia wonders if time dilation could explain the unexpectedly large and well-formed galaxies observed by the James Webb Space Telescope. Fred explains the role of time dilation in cosmology and why it might not be the answer to this particular puzzle.
- Dead Stars: Jane asks how many stars in the observable universe are already dead. Fred discusses the lifespans of various types of stars and the vast number of stars that have already met their end.
- Absolute High Temperature: Anthony from Kilkenny, Ireland, inquires about the concept of an absolute high temperature. Fred clarifies why there isn't an absolute maximum temperature, contrasting it with the well-defined absolute zero.
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