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Timeline of the Universe

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This is a timeline that attempts to show the best scientific estimates of the age of past events and predictions of the approximate timing of hypothetical future events with cosmological significance. Some locally significant events of interest to members of Homo sapiens are also included. See estimates of the date of Creation for alternative views based on religious tradition. (Note: in this context, billion means 1,000,000,000).

The distant past

  • 5 billion years ago: formation of the Sun
  • 4.5 billion years ago: formation of the Earth -- start of geologic timescale
  • 3.5 billion years ago: first signs of single-celled life on Earth
  • 600 to 500 million years ago: multicellular life evolves

The human era

The far future

See also:



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