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I have good news and bad news. Bad news first: two years ago we reported on the Crisis in Cosmology. Since then, it’s only gotten worse. And actually, the good news is also that the crisis in cosmology has actually gotten worse, which means we may be onto something!
The most exciting thing for any scientist is when something they thought they knew turns out to be wrong. So it’s no wonder that many cosmologists are starting to get excited by what has become known as the Hubble tension, or the crisis in cosmology. The “crisis” is the fact that we have two extremely careful, increasingly precise measurements of how fast the universe is expanding which should agree with each other, and yet they don’t.
Original Crisis in Cosmology
https://youtu.be/72cM_E6bsOs
Sabine Hossenfelder's episode "Do we travel through time at the speed of light?"
https://youtu.be/iBTez-nTKes
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Hosted by Matt O'Dowd
Written by Matt O'Dowd
Graphics by Leonardo Scholzer, Yago Ballarini, & Pedro Osinski
GFX Visualizations: Katherine Kornei
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Standard Candle Definition
https://astronomy.swin.edu.au/cosmos/s/Standard+Candle
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