JWST And Hubble Agree on The Universe's Expansion, And It's a Major Problem

New data confirms that variation in our Universe's expansion rate (or the Hubble 'tension') is not an error in measurement.

A new, precise measurement of the expansion rate of the Universe is in, and it's serving up a huge cosmic pickle.

A new measurement with a very high confidence level – 8 sigma – means that something else is the issue., and it has to do with the rate at which the Universe's expansion is accelerating – a fundamental measurement of the Universe. We have several methods of deriving this, but the two main ones are standard candles and standard rulers.

Current cosmological models work very well in some respects, so proposed solutions generally mean that something else gets broken. Human error, therefore, becomes an attractive explanation for the Hubble tension, so scientists keep measuring, re-measuring, and measuring again, looking for the place where we stuffed up.

Well, now JWST has caught up to Hubble, and that's just not the case. The measurements are all consistent.

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