Big Bang Theory

Key Stage 4

Meaning

The big bang theory is a scientific theory which suggests that all the matter in the universe once began in the same small point in space.

About the Big Bang Theory

The big bang theory is the current prevailing theory for the origin the modern universe.

The big bang theory is backed by evidence which shows all the observed galaxies in the universe must have all begun at one small point in space.

Evidence

Redshift - Redshift shows that all of the galaxies are moving away from each other at very high speed.

Cosmic Microwave Background - Microwave radiation coming from all directions in space show that at one point the entire universe was roughly the same temperature everywhere.

Old Stars - There have not been any stars observed older than 13 billion years.