The Cosmic Microwave Background (CMB) from our perspective The CMB defines the size of our observable universe, stretching ~46.5 billon light years across The Milky Way is .003 times as small as the glowing blue dot at the center, which itself is ~230 million light years acrosspic.twitter.com/f6jzgtBpm5
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Replying to @InertialObservr
If the universe is ~13.7 billion years, how can the observable universe be 46.5 billion light years across? Wouldn’t that mean that the matter would be traveling roughly 3.5x the speed of light? I’m probably missing something though
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Replying to @Martian_Will @InertialObservr
The rate of inflation is not linear. The radius of the universe shot up during the first 10^-35sec and then steadily expanding at the current Hubble constant which is ~73.8 km/sec/Mpc +/-2.4 km/sec-ish.
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I love how your very detailed and scientific explanation ends with “ish”
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That’s what the ~ means
10:10 PM - 8 Dec 2019
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