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...s_to_protect_earth_and_mars_from_colliding Will First Mars Astronauts Stay In Orbit - Tele-operating Sterile Rovers - To Protect Earth And Mars From Coll ...the surface, or as spores within the dust. Our astronauts will be covered in microbes from Earth too and our habitats filled with life. What happens whe ...

...ago, relatively soon after the [[ocean]]s [[Origin of water on Earth#Water in the development of Earth|formed 4.41 billion years ago]], and not long afte ...s increasing complexity and evolution of matter from inert to living state in the abiotic context of evolution of primitive Earth. ...

| caption = Sagan in 1980 * [[Space science]] ...

{{Life in the Universe}} ...e atmosphere also may have enough humidity at times for lichens to survive in semi-shade on the surface according to some experiments at DLR. The existen ...

...uthor and not of wikipedia. In this I am following the wikipedia guideline in [[Wikipedia:Quotations#Recommended_use_of_quotations]]: "Editors of controv ...h life exists, a MSR could potentially transfer viable organisms resulting in a risk of [[back contamination]] — the introduction of extraterrestrial org ...

...-20180227">{{cite web |author= Staff - [[Purdue University]] |title= Tesla in space could carry bacteria from Earth |url= https://phys.org/news/2018-02-t ...follows: "The vast majority of organisms reach a new home in the Milky Way in a technically dead state … Resurrection may, however, be possible." {{cite ...

{{Short description|Seccond planet from the Sun in the Solar System}} ...bout three-quarters illuminated. Almost no variation or detail can be seen in the clouds. ...

...|right|upright=1.20|[[Nucleic acids]] may not be the only [[biomolecule]]s in the Universe capable of coding for life processes.<ref name="AstroDNA">{{ci ...ins]], [[Protocell|early evolution]], distribution, and future of [[life]] in the [[universe]]. Astrobiology considers the question of whether [[extrater ...

| image = Titan in true color.jpg | caption = Titan in natural color. The thick atmosphere is orange due to a dense [[:Category:Or ...

{{redirect|Jupiter II|the spaceship in the 1960s television series Lost in Space|Jupiter 2|the airplane|Bristol Jupiter|other uses|Jupiter (disambigua ...a's trailing hemisphere in approximate natural color. The prominent crater in the lower right is [[Pwyll (crater)|Pwyll]] and the darker regions are area ...

...ere]], the nature of the CHZ and the objects within it may be instrumental in determining the scope and distribution of Earth-like [[extraterrestrial lif ...e too extreme (large or small, hot or cold, etc.), and settling on the one in the middle, which is "just right". ...

In [[planetary astronomy]] and [[astrobiology]], the '''Rare Earth hypothesis' ...inates from ''[[Rare Earth (book)|Rare Earth: Why Complex Life Is Uncommon in the Universe]]'' (2000), a book by [[Peter Ward (paleontologist)|Peter Ward ...

...reatures. Research and theory in this regard is a component of [[planetary science]] and the emerging discipline of [[astrobiology]]. ...biology.arc.nasa.gov/roadmap/g1.html |archivedate=17 January 2011 }}</ref> In August 2018, researchers reported that [[Ocean planet|water worlds]] could ...

* B.S. Earth Science, [[MIT]], 1970 * S.M. Earth Science, MIT, 1971 ...

...e| Legal Issues]] - [[Discussion of science value of a Mars sample return |science value]] - [[Dissenting views on Mars sample return back contamination risks ...h life exists, a MSR could potentially transfer viable organisms resulting in a risk of [[back contamination]] — the introduction of extraterrestrial org ...

|caption = Davies in 2016 | thesis_title = Contributions to theoretical physics: (i) Radiation damping in the optical continuum; (ii) A quantum theory of Wheeler–Feynman electrodyna ...

{{Vetted|0}}{{short description|A fissure in a planet's surface from which geothermally heated water issues}} ...hampagne vent white smokers.jpg|caption=White smokers emitting liquid rich in barium, calcium, silicon and carbon dioxide at the ''Champagne'' vent, Nort ...

...ed four types of [[biological]] [[experiment]]s to the surface of [[Mars]] in 1976. These were the first Mars landers to carry out experiments to look fo ....com/content/pdf/10.1023%2FA%3A1013387122386.pdf#page-1 |format=PDF |title=In Memoriam Dr. Harold P. Klein (1921 - 2001) |publisher=Springer |date=2001-1 ...

...een speculated and the subject expressed in [[science]], [[philosophy]], [[science fiction]] and [[popular culture]]. Advocates of [[space colonization]] have ...[[mediocrity principle]] suggests that planets like Earth should be common in the [[universe]], while the [[Rare Earth hypothesis]] suggests that they ar ...

...ed Professor of Chemistry. In 2005, he founded The Westheimer Institute of Science and Technology (TWIST) and the Foundation For Applied Molecular Evolution. ...da lab|url=http://www.nbcnews.com/id/29430688/|accessdate=5 July 2016|work=Science|date=February 27, 2009}}</ref><ref name="Lloyd">{{cite news|last1=Lloyd|fir ...