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[[File:Sagan large.jpg|thumb|[[Carl Sagan]] with a model of the Viking Lander in Death Valley California. [[Viking 1]] and [[Viking 2|2]] were the first spacecraft to [[Viking_lander_biological_experiments | search for present day life on Mars]].<br><br>Indeed, so far these are the only spacecraft to ever search for life outside of Earth. Curiosity doesn't have any direct life detection instruments on board, and its priority is to search for habitability, rather than life itself.]]
===Featured articles===
Life on Mars:
* [[Possible present day habitats for life on Mars]]
* [[Life on Mars]]
* [[Present day Mars habitability analogue environments on Earth]]
* [[Protecting Mars special regions with potential for life to propagate]]
* [[News coverage of potential present day habitats of life on Mars]]
* [[Life on Mars]]
* [[Viking program]]
* [[Allan Hills 84001]] - the meteorite with tiny structures resembling cells
* [[Sponges on Mars? We ask Stamenković about their oxygen-rich briny seeps model]]
 
Planetary protection:
* [[Planetary protection]]
* [[Interplanetary contamination]]
* [[Protecting Mars special regions with potential for life to propagate]]
* [[Planetary protection for a Mars sample return]]
* Mars sample return pages: [[Mars Sample Receiving Facility and sample containment|MSR facility]] - [[Mars Sample Return Legal Issues and International Public Debate| Legal Issues]] - [[Discussion of science value of a Mars sample return |science value]] - [[Dissenting views on Mars sample return back contamination risks|Dissenting views on back contamination risks]]
 
Life elsewhere
* [[Terrestrial analogue sites]]
* [[Hypothetical types of biochemistry]]
 
* [[Life on Titan]]
{{font color|red|Remaining articles on this page are not vetted yet - just imported from Wikipedia and may be out of date or have significant errors.}}
* [[Life on Venus]]
 
Remaining articles on this page are not vetted yet - just imported from Wikipedia and may be out of date or have significant errors.
 
* [[Hypothetical types of biochemistry]]
*Hypothetical types of biochemistry
* [[Life on Titan]]
*Life on Titan
* [[Life on Venus]]
*Life on Venus
 
Astrobiology:
* [[Astrobiology]]
* [[Abiogenesis]] - about the natural process of how life arises from non living matter
* [[Panspermia]] - transfer of life between planets on meteorites.
* [[Terrestrial analogue sites]]
* [[Murchison meteorite]]
 
Planetary protection:
[[List of articles that need to be vetted]]
* [[Planetary protection]]
* [[Interplanetary contamination]]
* [[Planetary protection for a Mars sample return]]
 
===Category browser===
Browse the encyclopedia by category here:<categorytree mode="pages" depth="0">Astrobiology</categorytree>
:<small>Select [►] to view subcategories</small>
 
===About this site===
 
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===Other wikis===
 
These wikis wereare also baseddeveloped onfrom Wikipedia sources.pages originally:
 
* [http://microtonal.miraheze.org MicrotonalEncyclopedia of Microtonality]
* [http://encyclopediaofbuddhism.org Encyclopedia of Buddhism] - set up by Dorje108 with me as co-admin.
* [http://doomsdaydebunked.miraheze.org Doomsday Debunked]
 
For the reasonsbackground to why forwe settingset up new encyclopedias for this content, instead of fixingworking iton the pages in Wikipedia itself, see [[Astrobiology Encyclopedia:Background to this encyclopedia|background to this encyclopedia]]. Also see my science blog post here:
 
Also see my science blog post:
 
* [https://www.science20.com/robert_walker/why_its_easy_to_improve_on_wikipedia_in_specialist_encyclopedias_ours_are_for_astrobiology_microtonal_music_and Why It's Easy To Improve On Wikipedia In Specialist Encyclopedias (Ours Are For Astrobiology, Microtonal Music, And Buddhism)]
 
==Some of the main pages==
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{{Astrobiology}}
{{Possible present day habitats for life on Mars}}
 
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