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{{Redirect|Origin of life|non-scientific views on the origins of life| Creation myth}} ...1 billion years ago]], and not long after the [[Age of the Earth|formation of the Earth]] 4.54 billion years ago.<ref name="NAT-20170301" /><ref name="NY ...

...ese observations lead many scientists to reassess the present habitability of Mars]] ...erhaps next to geological hotspots or in the deep hydrosphere? Objective B of NASA's first Mars Science Goal is to investigate these potential habitats: ...

| alma_mater = [[University of Chicago]],<br>(BA, BS, MS, PhD) * [[Cornell University]] ...

...oposals for a Mars Receiving Facility - the LAS version with extensive use of robotic handlers for the samples]] ...deline in [[Wikipedia:Quotations#Recommended_use_of_quotations]]: "Editors of controversial subject should quote the actual spoken or written words to re ...

| caption =Chandra Wickramasinghe at the University of Buckingham | known_for =[[organic compound|Organic]] composition of [[cosmic dust]] ...

...ol, a circle with a small equal-armed cross beneath it|Astronomical symbol of Venus]] | caption = A real-colour image of Venus taken by ''[[Mariner 10]]'' processed from two filters. The surface i ...

...istence of habitable conditions does not necessarily indicate the presence of life. ...nasa_finds_ice_under_martian_surface/ |title=Lake of frozen water the size of New Mexico found on Mars – NASA |publisher=The Register |date=November 22, ...

*[[Robotic spacecraft|Robotic exploration]] of the [[Solar System]] (image: [[Curiosity (rover)|''Curiosity'' rover]] on [ ...ce of [[sapience|intelligent life]] elsewhere in the universe. The science of extraterrestrial life in all its forms is known as [[exobiology]]. ...

M.A., University of Notre Dame<br /> Ph.D., Stony Brook University ...

..., subsequently, [[human intelligence]]) required an improbable combination of [[astrophysics|astrophysical]] and [[geology|geological]] events and circum ...an astronomer and astrobiologist, both faculty members at the [[University of Washington]]. ...

| adjectives = Titanean, Titanian<ref>"Titanian" is the adjectival form of both Titan and Uranus's moon [[Titania (moon)|Titania]]. The latter may be ...first14=J. R. | last14=Stauch| date=December 2006| title=The Gravity Field of the Saturnian System from Satellite Observations and Spacecraft Tracking Da ...

...abitable planet|a list of potentially habitable planets found to date|List of potentially habitable exoplanets}} ....jpg|thumb|Understanding planetary habitability is partly an extrapolation of the conditions on Earth, as this is the only [[planet]] known to support [[ ...

...[[Macquarie University]]<br>[[University of Newcastle upon Tyne|University of Newcastle]] |alma_mater = [[University College London]] ...

| caption = View of trailing hemisphere in natural color<ref name="caption" group="lower-alpha" ...last11= Tortora|first11= P.|title=The Gravity Field and Interior Structure of Enceladus |journal= Science|volume= 344|issue= 6179|year= 2014|pages= 78–80 ...

[[File:Diagram of different habitable zone regions by Chester Harman.jpg|thumb|300x300px|A di ...ts within it may be instrumental in determining the scope and distribution of Earth-like [[extraterrestrial life]] and [[extraterrestrial intelligence|in ...

{{Clone}}{{Needs-Attention|Much of this is rather out of date.}} [[File:Panspermie.svg|thumb|right|300px|Panspermia proposes that bo ...2013}}</ref><ref name="PHYS-20180227">{{cite web |author= Staff - [[Purdue University]] |title= Tesla in space could carry bacteria from Earth |url= https://phys ...

...ius = {{val|670900|u=km}}<ref name="factsheet">{{cite web |title=Overview of Europa Facts |work=NASA |url=http://solarsystem.nasa.gov/planets/profile.cf ...rst=Bruce G. |title=Free and forced obliquities of the Galilean satellites of Jupiter |date=2005 |volume=175 |issue=1 |pages=233–247 |doi=10.1016/j.icaru ...

{{Needs-Attention|Soome parts - e.g. Mars mateiral are several years out of date}} ...168/launching-the-alien-debates |title=Launching the Alien Debates (part 1 of 7) | accessdate=5 May 2014 | date=8 December 2006 |work=[[Astrobiology Maga ...

...he blue areas are lakes of liquid hydrocarbons<br/>"The existence of lakes of liquid hydrocarbons on Titan opens up the possibility for solvents and ener ...arbon compounds, compounds of another element, or another solvent in place of water. ...

...not yet detected). It excludes sites that are thought to be analogues only of conditions on early Mars, geological analogues, or analogues used only for ...oles of [[Mount Erebus]], hot springs, or the sulfur rich mineral deposits of the Rio Tinto region in Spain. ...