Crash Course – Astronomy – 44: A Brief History of the Universe

This is the forty-fourth video of the Crash Course – Astronomy series, hosted by Dr. Phil Plait. This video describes the beginnings of the universe from the big bang to the creation of the first atoms.

From the video description:

Table of Contents:

  • Mapping the History of the Universe Using Math and Observations 00:41
  • It Started With A Bang! 1:58
  • Rapid Expansion Smoothed Out Matter 4:55
  • Normal Matter Formed After 3-20 Minutes 5:12

Crash Course – Astronomy – 42: The Big Bang, Cosmology part 1

This is the forty-second video of the Crash Course – Astronomy series, hosted by Dr. Phil Plait. This video covers the discovery of the beginning of the universe in the Big Bang, and the Cosmic Microwave Background.

From the video description:

Table of Contents:

  • Distant Galaxies Show a Red Shift in Their Spectra 2:07
  • The Universe is Expanding 2:51
  • This Model is Called “The Big Bang” 5:12
  • The Universe is Almost 14 Billion Years Old 11:43

Crash Course – Astronomy – 24: Light

This is the twenty fourth video of the Crash Course – Astronomy series, hosted by Dr. Phil Plait. This video explains how astronomers use light to observe and understand everything in the universe around us.

From the video description:

Table of Contents:

  • Light is a Form of Energy 0:39
  • Wavelength Tells Us Its Energy and Color 0:59
  • Spectroscopy 7:28