why does universe expand every second – I'm a Scientist 25/26

Question: why does universe expand every second
- Keywords:
  expand,
  space,
  universe
Asked by days532dows3 to Dr Shikhar Mittal, ryanbegley, Paul, Martin M, keirrogers, jadegray, ievajankute, Andreas, anamariaraclariu on 23 Sep 2025.
- Martin McCoustra answered on 23 Sep 2025:
  
  The Universe began around 13.5 billion years ago in a Big Bang and the force of that event is still driving the expansion of the Universe today.

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