StarTalk Radio Hubble Trouble with Hakeem Oluseyi
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Mar 4, 2025 
Hakeem Oluseyi, an accomplished astrophysicist and CEO of the Astronomical Society of the Pacific, dives into cosmic questions with infectious enthusiasm. He discusses the intriguing concept of 'Hubble tension' and the latest from the James Webb Space Telescope. Oluseyi unpacks dark matter's mysteries and its impact on physics, while letting slip insights into Dyson spheres and their potential in harnessing stellar energy. Expect a blend of humor and deep scientific inquiry, making complex ideas accessible and engaging!
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Hubble Tension
- The Hubble tension arises from discrepancies between the expansion rate derived from the cosmic microwave background and measurements from standard candles like supernovae.
- This tension, while seemingly small in percentage, is significant due to reduced error bars, prompting questions about our cosmological models.
Plasma Loop Revelation
- Hakeem Oluseyi recounts Art Walker's research on the sun's plasma loops, initially dismissed by theorists due to their constant cross-section.
- Walker's rigorous methodology with multiple telescopes proved the observation correct, forcing theorists to adjust their models.
Andromeda Paradox
- Hakeem Oluseyi explains the Andromeda Paradox: observers in the same location, moving at different speeds, perceive events in Andromeda galaxy at different times.
- This challenges the notion of a universal "now", suggesting it's an illusion due to our proximity and the speed of light.