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The oldest signal in space. The echo of the Big Bang itself. This is how the microwave background radiation is sometimes called. It allowed us to look at the Universe in its infancy, but new observations of this phenomenon may allow us to look even further into the past. In this program, we will show what we have a chance to learn from it. We invite you to Astronarium! 00:00 - Introduction 03:17 - Echo of the Big Bang 12:33 - LiteBIRD satellite 15:22 - Analysis of background radiation 19:11 - Traces of inflation? 21:53 - Summary Nationwide premiere on TVP Nauka: October 27, 2023 #cosmology #astronomy #microwaves