And yet, in 2016, a team often known as SH0ES used the cosmic distance ladder method to peg the Hubble constant at seventy three.2 with an accuracy of two.four p.c. They then spot these Cepheid stars in nearby galaxies and use them to calculate how far-off the galaxies have to be. Next, the Cepheids are used to calibrate the distances to Sort Ia supernovas – even brighter (though rarer) customary candles that can be seen in faraway galaxies.
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