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Does Space Expand?

Explore the debate on 'expanding space' and its perceived conflict with general relativity in cosmology. Are traditional analogies misleading?

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There seems to be something in the air these days that is making people speak out against the idea that space is expanding. For evidence, check out these two recent papers:

The kinematic origin of the cosmological redshift Emory F. Bunn, David W. Hogg A diatribe on expanding space J.A. Peacock Expanding Space: the Root of all Evil? Matthew J. Francis, Luke A. Barnes, J. Berian James, Geraint F. Lewis

Admittedly, my first sentence is grossly unfair. The correct thing way to paraphrase the underlying argument here is to say that "space is expanding" is not the right way to think about certain observable properties of particles in general-relativistic cosmologies. These aren't crackpots arguing against the Big Bang; these are real scientists attacking the Does the Earth move around the Sun? problem. I.e., they are asking whether these are the right words to be attaching to certain indisputable features of ...

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