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Crash Course: Stars & Galaxies (14:07)

Key Ideas

As this video progresses, key ideas will be introduced to invoke discussion.

Key Ideas

Think about the following questions as you watch the video

  1. 03:13 What pulled together the hydrogen and helium atoms found in space not long after the Big Bang? What was the result?
  2. 05:13 Will Earth be affected by the collision of the Milky Way and Andromeda galaxies?
  3. 08:45 At what temperature do hydrogen and helium atoms fuse together?
  4. 09:50 Do bigger stars live longer or do smaller stars?
  5. 10:22 Where do the metals heavier than iron come from?
  6. 11:59 Where did the metal in the ring on John’s finger come from?