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.
The Big Bang is the idea that 13.7 billion years ago our Universe began expanding from a single point.
There are three main pieces of evidence that support this theory.
1. The expanding Universe.
1. Expanding Universe
In 1929, Edwin Hubble determined that galaxies were all moving away from each other.
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