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For past times above one gigasecond, see Timeline of world history (disambiguation) and Timeline of human prehistory. For future times above one gigasecond, see Timeline of the future. For a list of half-lives above one gigasecond, see List of radioactive isotopes by half-life.

A gigasecond (symbol: Gs) is 1 billion seconds, or roughly 31.558 years. Below is a table that lists times of between 1 and 1000 gigaseconds, or between 31.558 and 31,558 years. This timescale encompasses the whole of human history since the time of Cro-Magnon man.

1–10 gigaseconds

10–100 gigaseconds

100–1000 gigaseconds


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