Cosmic history
A journey through 13.8 billion years
Illustrative past light cone · radial time scale is compressed. These layers show different epochs, not simultaneous shells.
Look inside a cutaway of cosmic history: nearby galaxies give way to early galaxies, the dark ages, and the cosmic microwave background. More distant light shows us an earlier universe.
Illustrative past light cone · radial time scale is compressed. These layers show different epochs, not simultaneous shells.