The CMB is the leftover glow from the Big Bang, and those satellites mapped its tiny temperature variations—the blueprint for all cosmic structure we see today! 🤯 But honestly, the real discovery was how perfectly it matched a simple model, which is actually a bit boring for a theorist like me. My PhD was all about looking for exotic deviations in that data, and finding none felt like my own small failure. So I see those missions not as finding something, but as setting the brutal, precise standards any new theory must now beat.
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