File:Cosmic Calendar.png

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Summary

DescriptionCosmic Calendar.png	English: The 13.8 billion year lifetime of the universe mapped onto a single year. At this scale the Big Bang takes place at the instant of midnight going into January 1, and the current time is the end of December 31 at midnight, and the longest human life is about 1/4th of a second, a blink of an eye.^[1] The scale was popularized by Carl Sagan in his book The Dragons of Eden and on the television series Cosmos, which he hosted.
Date	1 March 2011 (original upload date)
Source	Own work
Author	User:Efbrazil

There is a text free version for use by translators here: File:Cosmic Calendar No Text.png

This image is the original work of Eric Fisk. Images are composited from Wikipedia, NASA, and other government sites, as shown below:

Big Bang: File:Universe expansion2.png (Public domain)
Milky Way: http://rst.gsfc.nasa.gov/Sect20/A2a.html archive copy at the Wayback Machine (Public domain)
Solar System: File:Solar System size to scale.svg (Public domain)
Stromatolites: en:File:Stromatolites in Sharkbay.jpg (Public domain)
Red Algae: File:Laurencia.jpg (CC-BY-SA, Author: Ravidreams)
Dinosaur asteroid: http://www.nsf.gov/news/special_reports/dino/ultimate.jsp archive copy at the Wayback Machine (Public domain)
Skulls: http://rst.gsfc.nasa.gov/Sect20/A12c.html archive copy at the Wayback Machine (Public domain)
Redwood forest background: File:Trees and sunshine.JPG (Public domain)
Shanghai city background: File:Shanghai the bund from Jin Mao.JPG (Public domain)
Stopwatch: File:Stopwatch2.jpg (Public domain)

References

↑ The Universe At Your Fingertips Activity: Cosmic Calendar. Astronomical Society of the Pacific.

Licensing

Efbrazil, the copyright holder of this work, hereby publishes it under the following license:

This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.

Attribution: Efbrazil

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Original upload log

Transferred from en.wikipedia to Commons using For the Common Good.

The original description page was here. All following user names refer to en.wikipedia.

Date/Time	Dimensions	User	Comment
14 February 2012, 00:17	1,600 × 1,200 (1,767,645 bytes)	w:en:Mahahahaneapneap (talk \| contribs)	(Compressed)
13 February 2012, 22:08	1,600 × 1,200 (2,645,756 bytes)	w:en:Efbrazil (talk \| contribs)	(Somehow "June" was accidentally removed in the last copy of the graphic. Fixed, although this undoes the compression that was added...)
21 May 2011, 01:18	1,600 × 1,200 (1,840,126 bytes)	w:en:Mahahahaneapneap (talk \| contribs)	(Compressed)
11 May 2011, 18:30	1,600 × 1,200 (2,722,530 bytes)	w:en:Efbrazil (talk \| contribs)	(minor alignment edit)
11 May 2011, 18:08	1,600 × 1,200 (2,721,316 bytes)	w:en:Efbrazil (talk \| contribs)	(1 --> one, Old Testament capitalized)
7 April 2011, 20:05	1,600 × 1,200 (2,721,162 bytes)	w:en:Efbrazil (talk \| contribs)	(megafauna die out --> megafauna stressed, to be more accurate about the time frame but still capture the idea that the spread of humanity coincided with megafauna die off. Also, "humans on every continent" --> "humans migrate to the Americas" to eliminate)
31 March 2011, 15:46	1,600 × 1,200 (2,721,216 bytes)	w:en:Efbrazil (talk \| contribs)	()
31 March 2011, 06:20	1,600 × 1,200 (2,720,891 bytes)	w:en:Efbrazil (talk \| contribs)	(Incorporated feedback for this as a featured picture: homo erectus italicized, evolution lower case, new big bang picture that works better than the distorted image of cosmic background radiation)
30 March 2011, 16:20	1,600 × 1,200 (2,766,948 bytes)	w:en:Efbrazil (talk \| contribs)	(fixed a couple stray pixels)
30 March 2011, 04:53	1,600 × 1,200 (2,765,460 bytes)	w:en:Efbrazil (talk \| contribs)	(Eliminated stopwatch glare)
30 March 2011, 04:26	1,600 × 1,200 (2,764,014 bytes)	w:en:Efbrazil (talk \| contribs)	()
29 March 2011, 23:08	1,600 × 1,200 (2,656,006 bytes)	w:en:Efbrazil (talk \| contribs)	(Incorporating featured picture candidate feedback)
28 March 2011, 21:01	1,600 × 1,200 (2,520,300 bytes)	w:en:Efbrazil (talk \| contribs)	(minor edit- Removed direct tyrannosaurus reference to avoid date confusion it could cause)
28 March 2011, 20:43	1,600 × 1,200 (2,520,132 bytes)	w:en:Efbrazil (talk \| contribs)	(Changed to 13.7 billion year old universe model, resulting in a couple date changes. Added breakup of Pangaea. Called out Trilobites and Tyrannosaurus and that Columbus "arrives" in America instead of "discovers".)
2 March 2011, 19:32	1,600 × 1,200 (2,529,272 bytes)	w:en:Efbrazil (talk \| contribs)	(minor tweak to arrows to better associate them with visuals down below them.)
2 March 2011, 18:36	1,600 × 1,200 (2,544,275 bytes)	w:en:Efbrazil (talk \| contribs)	(Evidence arrows now in blue to clearly differentiate them)
1 March 2011, 23:55	1,600 × 1,200 (2,540,889 bytes)	w:en:Efbrazil (talk \| contribs)	(This is original work by Eric Fisk. Images are composited from Wikipedia, NASA, and other government sites, as shown below: Big Bang: http://science.gsfc.nasa.gov/660/research/ Milky Way: http://rst.gsfc.nasa.gov/Sect20/A2a.html Solar System:http://en.wi)

File history

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Dimensions	User	Comment
current	18:29, 9 July 2018	4,050 × 2,700 (8.4 MB)	Efbrazil	Fixed stray line in visualization
	17:22, 15 May 2018	4,050 × 2,700 (11.52 MB)	Efbrazil	Removed background, added too much noise, muted a few colors
	21:04, 27 June 2017	4,050 × 2,700 (14.62 MB)	Efbrazil	graphical enhancements for better legibility
	21:52, 19 November 2016	1,600 × 1,200 (3.45 MB)	Efbrazil	graphic glitch fix
	20:36, 19 November 2016	1,600 × 1,200 (3.45 MB)	Efbrazil	Compressing to 1600 * 1200, I guess this is the best size for wikipedia? Just to be consistent with what came before.
	20:33, 19 November 2016	3,936 × 2,952 (18.32 MB)	Efbrazil	Full graphical redesign but with similar content, includes a bit more information. Additions: - Stars fusing elements - Trace fossils - Vertebrates - Amphibians - Pangaea forming - Math for human lifetime Date corrections - Peak of ice age - Date for...
	21:01, 22 May 2013	1,600 × 1,200 (2.5 MB)	Efbrazil~commonswiki	Removed "sex" because of the obvious teaching issue with it in there, also off shifted astronomical data to approximately 600 million years after big bang.
	21:18, 21 May 2013	1,600 × 1,200 (2.5 MB)	Efbrazil~commonswiki	fix to top grid cell height
	20:40, 21 May 2013	1,600 × 1,200 (2.51 MB)	Efbrazil~commonswiki	OCD fix: 1 pixel white space on width edges trimmed
	20:01, 21 May 2013	1,600 × 1,200 (2.51 MB)	Efbrazil~commonswiki	Tweaked the graphics to eliminate the white space, punch up the graphics a tick, streamline the evidence arrows, and generally make things better. Content unchanged.