Biology
What sparked the beginning of life?
Quick fact
The Big Bang describes the expansion of the universe that began around 13.8 billion years ago.
Why this is interesting
The entire universe, including all galaxies, stars, planets, and matter, began from an extremely hot and dense early state.
Read the full explanation
Understanding What sparked the beginning of life?
Scientists study cosmic microwave background radiation, galaxy movement, and the distribution of matter to understand how the universe evolved.
A deeper explanation
The Big Bang was not an explosion into empty space but the expansion of space itself. As the universe expanded and cooled, fundamental particles formed, followed by atoms, stars, galaxies, and eventually planets. Modern cosmology uses observations of the universe's structure and evolution to understand its origins and possible future.