The Big Bang Theory | GCSE Physics Practice
The Big Bang theory suggests the universe began from a very small, hot, and dense region.
What is the main piece of evidence for the Big Bang?
What is The Big Bang Theory | Practice?
"The prevailing cosmological model for the observable universe from the earliest known periods through its subsequent large-scale evolution."
Universe Origins
The Universe began ~13.8 billion years ago.
CMBR (Cosmic Microwave Background Radiation) is a remnant of the early hot universe.
Red-shift shows that galaxies are moving away from each other.
Current theories are still being refined with new observations.
Common Mistake: The Big Bang wasn't an "explosion in space"; it was the rapid expansion of SPACE ITSELF.
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