Detailed logarithmic timeline
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This timeline shows the whole
history of the universe History (derived ) is the systematic study and the documentation of the human activity. The time period of event before the invention of writing systems is considered prehistory. "History" is an umbrella term comprising past events as well ...
, the
Earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surfa ...
, and
mankind Humans (''Homo sapiens'') are the most abundant and widespread species of primate, characterized by bipedalism and exceptional cognitive skills due to a large and complex brain. This has enabled the development of advanced tools, culture, ...
in one table. Each row is defined in ''years ago'', that is,
year A year or annus is the orbital period of a planetary body, for example, the Earth, moving in its orbit around the Sun. Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by change in weather, the hou ...
s before the present
date Date or dates may refer to: *Date (fruit), the fruit of the date palm (''Phoenix dactylifera'') Social activity *Dating, a form of courtship involving social activity, with the aim of assessing a potential partner ** Group dating *Play date, a ...
, with the earliest times at the top of the chart. In each table cell on the right, references to events or notable people are given, more or less in chronological order within the cell. Each row corresponds to a change in log (time before present, that is, the logarithm of the time before the present) of about 0.1 (using base 10 logarithm). The dividing points are taken from the R′′20 Renard numbers. Thus each row represent about 21% of the time from its beginning until the present. The table is divided into sections with subtitles. Note that each such section contains about 68% of all the time from the beginning of the section until now.


Past


13,800 million years ago to 5500 million years ago


5500 million years ago to 1800 million years ago


1800 million years ago to 550 million years ago


550 million years ago to 180 million years ago


180 million years ago to 55 million years ago


55 million years ago to 18 million years ago


18 million years ago to 5.5 million years ago


5.5 million years ago to 1.8 million years ago


1.8 million years ago to 550,000 years ago


550,000 years ago to 180,000 years ago


180,000 years ago to 55,000 years ago


55,000 years ago to 18,000 years ago


18,000 years ago to 5,500 years ago


5,500 years ago to 1,800 years ago


1,800 years ago to 550 years ago


550 years ago to 180 years ago


180 years ago to 55 years ago


55 years ago to 18 years ago


18 years ago to present


Future

A logarithmic timeline can also be devised for events which should occur in the future, barring unforeseen circumstances and assuming that we can extrapolate into the future based on our science.


See also

* Geologic time scale#Table of geologic time * List of timelines *
Logarithmic timeline A logarithmic timeline is a timeline laid out according to a logarithmic scale. This necessarily implies a zero point and an infinity point, neither of which can be displayed. The most natural zero point is the Big Bang, looking forward, but ...
*
Orders of magnitude (time) An order of magnitude of time is usually a decimal prefix or decimal order-of-magnitude quantity together with a base unit of time, like a microsecond or a million years. In some cases, the order of magnitude may be implied (usually 1), like a ...
*
Technological singularity The technological singularity—or simply the singularity—is a hypothetical future point in time at which technological growth becomes uncontrollable and irreversible, resulting in unforeseeable changes to human civilization. According to the m ...
* Timeline of the evolutionary history of life *
Chronology of the universe The chronology of the universe describes the history and future of the universe according to Big Bang cosmology. Research published in 2015 estimates the earliest stages of the universe's existence as taking place 13.8 billion years ago, wit ...
*
World history World history may refer to: * Human history, the history of human beings * History of Earth, the history of planet Earth * World history (field), a field of historical study that takes a global perspective * ''World History'' (album), a 1998 albu ...
*
Timeline of the far future While the future cannot be predicted with certainty, present understanding in various scientific fields allows for the prediction of some far-future events, if only in the broadest outline. These fields include astrophysics, which studies how ...
*
Future of an expanding universe Observations suggest that the expansion of the universe will continue forever. The prevailing theory is that the universe will cool as it expands, eventually becoming too cold to sustain life. For this reason, this future scenario once popularly c ...


References


External links


Interview with Heinz von Foerster


{{DEFAULTSORT:Detailed Logarithmic Timeline Historical timelines *