The CMB Information Loss Paradox - Is There a Dipole Temperature Anisotropy in the Cosmic Microwave Background?

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The temperature of the cosmic microwave background is roughly 2.7 Kelvin in all directions. Even though we're not moving at relativistic speeds with respect to the microwave background, there is a dipole temperature anisotropy that tells us how fast we're moving through space. Faisal Siddiqui: I still do not understand how the book burning in a bonfire case is different than throwing a book in a black hole.

Welcome to the February 2023 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). We take questions asked by Patreons, whittle them down to a more manageable number — based primarily on whether I have anything interesting to say about them, not whether the questions themselves are good — and sometimes group them together if they are about a similar topic. Enjoy!

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The big news this month is the successful awarding of the first ever Mindscape Big Picture Scholarship. Congratulations to Lyat Melese and Rehman Hassan! We continue to collection donations for next year’s scholarship contest.

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