



Is there any tension between different methods of measuring the Hubble constant?
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what is the fastest thing in the universe Informational
- What is the concept of a retarded potential in electromagnetism? How does the speed of light relate to the propagation of electromagnetic waves, such as radio waves, microwaves, X-rays, and gamma rays?
- Does non-locality violate causality?
- Could this tension point to new physics beyond our current understanding of cosmology and the role of the speed of light?
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- What are the implications of these phenomena for our understanding of spacetime and the nature of light?
- What are some of the key unanswered questions about the large-scale structure of the universe?
- How does the speed of light relate to the phenomenon of diffraction and interference?
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