View source for Template:Nature timeline

<!---
NOTE: PLEASE MAINTAIN SIMPLE WORDING WIKILINKED TO DETAILS - SEE => "[[Template talk:Nature timeline#Best wording]]" (or see => https://en.wikipedia.org/wiki/Template_talk:Nature_timeline#Best_wording_for_.22.7B.7BNature_timeline.7D.7D.22_events.3F ) - Enjoy! :) [[User:Drbogdan|Drbogdan]] ([[User talk:Drbogdan|talk]]) 01:00, 20 August 2016 (UTC)
--->
{{Short description|Universe events since the Big Bang 13.8 billion years ago}}
{{Graphical timeline
 | <!--- you MUST remove any lines you don't need --->

 | help=off
 | link-to=Nature timeline

 | scale-increment=1.0
 | plot-colour=#e5cc7f
 | from=-13.799
 | to=0

 | title=[[Astronomy:Chronology of the universe|Nature timeline]]

 | bar11-from=-13.799
 | bar11-to=-13.650
 | bar11-text= '''<small>[[Dark Ages (cosmology)|<span style="color:white;">Dark Ages</span>]]</small>''' 
 | bar11-colour=#000000
 | bar11-left=0
 | bar11-nudge-right=0.6
 | bar11-nudge-down=-0.3

 | bar2-from=-13.650
 | bar2-to=-12.80  
 | bar2-text='''<small>[[Astronomy:Reionization|white;">Reionization</span>]]</small>'''
 | bar2-colour=#555555
 | bar2-left=0
 | bar2-nudge-right=0.5
 | bar2-nudge-down=-0.5

 | bar3-from=-12.800
 | bar3-to=-4.54
 | bar3-left=0
 | bar3-colour=#666666
 | bar3-text= '''''<small>[[Astronomy:Matter-dominated era|#99ffff;">Matter-dominated<br/>era</span>]]</small>''''' 
 | bar3-nudge-left=-0.5
 | bar3-nudge-down=-1.7

 | bar4-from=-4.4
 | bar4-text='''''<small>[[Astronomy:Accelerating expansion of the universe|#99ffff;">accelerated expansion</span>]]</small>''''' 
 | bar4-colour=#7aa3cc
 | bar4-left=0.01
 | bar4-nudge-right=0
 | bar4-nudge-down=8.0

 | bar5-from=-4.4
 | bar5-text='''''<small>[[Chemistry:Water|white;">water</span>]]</small>''''' 
 | bar5-colour=#7aa3cc
 | bar5-left=0.01
 | bar5-nudge-right=0.75
 | bar5-nudge-down=5.1
 
 | bar6-from=-4.0
 | bar6-text='''[[Unicellular life|Single-celled life]]'''<!--protocells 3.8-4.0 Gya, prokaryotes 3.5 Gya, eukariotes 3 Gya-->
 | bar6-colour=#b3d9ff
 | bar6-left=0.0
 | bar6-nudge-right=0.75
 | bar6-nudge-down=4.6

 | bar7-from=-3.500
 | bar7-text='''''<small>[[Biology:Evolution of photosynthesis|green;">photosynthesis</span>]]</small>'''''
 | bar7-colour=#99ffff
 | bar7-left=0.12
 | bar7-nudge-right=0.2
 | bar7-nudge-down=2.5

 | bar8-from=-1.850
 | bar8-text='''[[Biology:Multicellular organism|<!--- Complex life --->Multicellular<br>life]]'''
 | bar8-colour=#b3ffdb
 | bar8-left=0.17
 | bar8-nudge-right=0.0
 | bar8-nudge-down=0.0

 | bar10-from=-0.520  
 | bar10-to=0
 | bar10-text='''[[Vertebrates|<span style="color:white;">Vertebrates</span>]]'''
 | bar10-colour=#cc9900
 | bar10-left=0.22
 | bar10-nudge-down=0.0
<!--
 | bar12-from=-0.055  
 | bar12-to=0
 | bar12-text='''[[Biology:Primates|{{font|size=25%|color=#ff8800|Primates}}]]''' [earlier version tried to show "Humans", but 3 Mya (or even 15 Mya for Hominini) cannot be resolved at this scale; "Primates" would be visible, but almost too small to label]
 | bar12-colour=#ffdd55
 | bar12-left=0.5
 | bar12-nudge-down=-0.2
-->
 | note1-at=-13.799
 | note1=<small>[[Astronomy:Big Bang|<!---Earliest--->Universe]] ([[Astronomy:Age of the universe|−13.80]])</small> <!--- <br>(-13.799) also see [[Astronomy:Age of the universe|Age of the universe]] --->

 | note2-at=-13.6 
 | note2=<small>[[Astronomy:Stellar population#Population III stars|Earliest stars]]</small> <!--- per https://www.nature.com/articles/d41586-018-02616-8 (-13.6)]] - 13.6 bya --->

 | note3-at=-13.4
 | note3=<small>[[Astronomy:GN-z11|Earliest galaxy]]</small> <!--- [[Astronomy:Milky Way|Formation of Milky Way (-13.4)]] - 13.4 bya --->

 | note4-at=-13.1
 | note4=<small>[[Astronomy:ULAS J1342+0928|Earliest quasar]]/[[Astronomy:Supermassive black hole|sbh]]</small> <!--- earliest quasar/supermassive black hole - 13.1 bya a/o 6 December 2017 => https://www.space.com/39000-oldest-farthest-monster-black-hole-yet.html --->
 | note4-nudge-down=0.0

 | note5-at=-11.52
 | note5=<small>[[Astronomy:Omega Centauri|Omega Centauri<!---forms--->]]</small>

 | note6-at=-10.0
 | note6=<small>[[Astronomy:Andromeda Galaxy|Andromeda Galaxy<!---forms--->]]</small>

 | note7-at=-8.8
 | note7=<small>[[Astronomy:Milky Way#Formation|Milky Way spirals<!---Galaxy<br>spiral arms form--->]]</small>

 | note8-at=-6.8
 | note8= <!--- <small>[[Astronomy:NGC 188|NGC 188 star cluster forms]]</small> --- omit due to template text label overlap --->

 | note9-at=-6.5 <!--- est age is 6.5 bya - per [[Astronomy:Alpha Centauri#Nature and components|Alpha Centauri]] --->
 | note9=<small>[[Astronomy:Alpha Centauri|Alpha Centauri<!---forms--->]]</small>

 | note10-at=-6.0
 | note10= <!--- <small>[[Astronomy:Accelerating expansion of the universe|cosmic speed-up]]</small> -- est time of 6.0 bya seems supported by several sources - see => [[Astronomy:Accelerating expansion of the universe#Error in Acceleration time?|Accelerating expansion of the universe#Error in Acceleration time?]] --->

 | note11-at=-4.568 <!--- est age of the [[Astronomy:Solar System|Solar System]] is 4.568 bya  est. age of the [[Astronomy:Earth|Earth]] is 4.54 bya - per [[Earth:Age of the Earth|Age of the Earth]] --->
 | note11=<small>[[Astronomy:Earth|Earth]]/[[Astronomy:Formation and evolution of the Solar System|SolarSystem]]</small>

<!--- | note12-at=-4.412 ---> <!--- Water present on early Earth at least 4404 ± 8 mya - see [[Earth:Origin of water on Earth#Water in the development of the Earth|Origin of water on Earth]] - and => http://www.geology.wisc.edu/~valley/zircons/Wilde2001Nature.pdf --->
<!--- | note12=<small>[[Earth:Origin of water on Earth#Water in the development of Earth|Earliest water]]</small> --->
 
 | note13-at=-4.0 <!-- est. 3.8-4.3 Gya, no reason to pick the outer fringe of the confidence interval here-->
 | note13=<small>[[<!--- Abiogenesis --->Earliest known life forms|Earliest life]]</small>

 | note14-at=-3.500
 | note14=<small>[[Earth:Geological history of oxygen|Earliest oxygen]]</small>

 | note15-at=-2.450
 | note15=<small>[[Earth:Geological history of oxygen|Atmospheric oxygen]]</small>

 | note16-at=-1.200 <!--- earliest evidence of sexual reproduction is 1.2 billion years ago - per [[Biology:Evolution of sexual reproduction#Origin of sexual reproduction|Evolution of sexual reproduction]] --->
 | note16=<small>[[Biology:Evolution of sexual reproduction#Origin of sexual reproduction|<!---Earliest--->Sexual reproduction]]</small>

 | note17-at=-0.850
 | note17=<small>[[Biology:Evolutionary history of plants#Colonization of land|{{font|size=90%|color=#0645ad|Earliest plants}}]]</small>

 | note18-at=-0.541
 | note18=<small>[[Earth:Cambrian explosion|{{font|size=90%|color=#0645ad|Cambrian explosion}}]]</small>

 | note19-at=-0.250
 | note19=<small>[[Biology:Mammal|{{font|size=90%|color=#0645ad|Earliest mammals}}]]</small>

 | note20-at=-0.025
 | note20=<small>[[Biology:Ape|{{font|size=90%|color=#0645ad|Earliest apes}}]]</small>

 | note21=<center><span style="display:block">[[Biology:Timeline of the evolutionary history of life|L<br>i<br>f<br>e]]</span></center>
 | note21-at=-1.0
 | note21-nudge-left=12.9
 | note21-nudge-up=-1.5
 | note21-remove-arrow=yes

 | caption={{align|right|[[Clickable]]|style=font-size:85%}}{{align|left|<small>([[Physics:Bya (unit)|billion years ago]])</small>}}<br><span style="float:right;margin-right:0.5em">[[File:interactive icon.svg|18px|link=|The image above contains clickable links|alt=The image above contains clickable links]]</span>{{align|left|<small>({{Crossref|See also: [[Template:Human timeline|Human timeline]], and [[Template:Life timeline|Life timeline]].)}}</small>}}
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