For the last two years, while on the train, been watching stuff on youtube about cosmology.. one day my kid got up early, woke me up, and strated asking about origin of the universe and how do we know about it.. here we go, time well spent 
Brain: You _really_ have to start packing for your trip to China now. Bigger Brain: Sure, but let's google "CMB radiation pressure at relativistic speeds" first because I have very important questions.
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This is like me. Except China, it's Austria. Instead of radiation pressure, it's modeling diodes from datasheet parameters.
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