COURSE SUMMARY
At the end of this course, you will be able to:
• Explain the theories used to interpret the physical processes and interactions
between celestial objects.
• Explore various universal phenomena and relate them to astronomical theories and
data observations.
• Analyse and elaborate on the cosmological models which explain the formation
and evolution of our universe.

Baryon Acoustic Oscillation
In cosmology, baryon acoustic oscillations (BAO) are fluctuations in the density of the visible baryonic matter (normal matter) of the universe, caused by acoustic density waves in the primordial plasma of the early universe. In the same way that supernovae provide a "standard candle" for astronomical observations, BAO matter clustering provides a "standard ruler" for length scale in cosmology.

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