Discover the scientific evidence that supports the Big Bang theory - from the expanding Universe to cosmic microwave background radiation.
- An expanding Universe, an abundance of light elements, and radiation detected in space all support the Big Bang theory.
- In 1929, Edwin Hubble determined that galaxies were all moving away from each other.
- Cosmic microwave background radiation is radiation produced just after the Big Bang.
- Hydrogen and helium were the first elements.