Can just one equation describe the entire history of the universe?

Einstein’s General Relativity relates the curvature of space to what is present inside of it, but the equation has infinite variations. One very general class of spacetimes, however, obeys the same straightforward equation: the Friedmann equation. Just by measuring the universe today, we can extrapolate all the way back to the Big Bang, 13.8 billion years in our past.

Contents:

00:00 Introduction
03:13 Einstein's General Relativity and its Impact
11:50 The Friedmann Equation and Cosmology
25:18 Assumptions and Validity in Cosmological Models
32:04 Challenges and Uncertainties in Cosmology

#Cosmology #Universe #space

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