The Big Bang, red-shift and the expanding Universe

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Question 33
Easy

The Big Bang theory is a key scientific model explaining the origin and evolution of the Universe.

According to this theory:

  • the Universe expanded from a very hot, dense initial state
  • the space between galaxies is continuing to expand.

Which of the following discoveries provides direct evidence that the Universe is expanding?

the observation of red-shift in light from distant galaxies

the detection of exoplanets in nearby star systems

the cyclical phases of the Moon as seen from Earth

the presence of heavy elements in rocky planet cores

The Big Bang, red-shift and the expanding Universe Questions

  1. GCSE
  2. /Physics
  3. /The Big Bang, red-shift and the expanding Universe