hubble

The Hubble Tension with Prof Geraint Lewis

发表于 2020-02-23 tension hubble geraint

The Hubble Space Telescope launched in 1990. It is named after the American astronomer who found our universe was expanding. Ninety years on, with much better k…

How constant is the Hubble constant with professor Geraint Lewis

发表于 2020-07-19 hubble geraint accuracy

Ninety years ago we first measured the rate of our expanding Universe. Today our accuracy is better but the new techniques are producing different numbers. Are …

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