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Threshold 2: Stars Light Up (2:49)

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. 00:30 What was the Universe like before the first stars formed? How long was it after the Big Bang before stars started to form?
  2. 01:30 Why do atoms packed together tightly heat up?
  3. 02:16 How long do stars continue releasing energy into space?