Cosmic Microwave Background Challenge | Space Time | PBS Digital Studios

The video discusses the Big Bang theory, focusing on the cosmic Microwave Background (CMB) radiation as key evidence. It explains how the universe was once smaller and denser, and how CMB photons traveled through an expanding universe. Two challenge questions are presented: one conceptual and one mathematical, with instructions for submission. An announcement is made about a seminar on gravitational waves at Lehman College.

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