The Singularity
At the very beginning, all matter and energy were concentrated in a single point.
What is the Big Bang?
The Big Bang theory describes the origin of the universe, starting from a singularity and expanding to the cosmos we observe today.
Timeline of the Big Bang
Inflation
A rapid expansion occurred within fractions of a second after the Big Bang.
Formation of Elements
Hydrogen, helium, and trace amounts of lithium were formed in the first few minutes.
Evidence Supporting the Big Bang
Cosmic Microwave Background (CMB)
The CMB is the faint glow of radiation left over from the early universe, providing strong evidence for the Big Bang.
Redshift of Galaxies
Light from distant galaxies shifts toward the red end of the spectrum, indicating the universe's expansion.