Chapter 10 — Science & Nature
Is the universe really expanding?
Yes — every galaxy outside our local group is moving away from every other, and the rate is accelerating (attributed to 'dark energy'). Not into anything; space itself is stretching.
Follow-up questions
What was before the Big Bang?
The honest answer: unknown. 'Before' may not even be a meaningful concept if time itself started with the Big Bang.
Will it end?
Current best guess: continued expansion into a cold, empty 'heat death' trillions of years from now.
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