wikademia>Eme at 02:00, 1 December 2009

2009-12-01T02:00:55Z

← Older revision		Revision as of 02:00, 1 December 2009
Line 1:		Line 1:
	~~{{Infobox Planet~~
	~~\| bgcolour = #E8AB79~~
	~~\| name = Mars~~
	~~\| symbol = [[Image:Mars symbol.svg\|25px\|Astronomical symbol of Mars]]~~
	~~\| image = [[Image:Mars Hubble.jpg\|240px\|The planet Mars]]~~
	~~\| caption = Mars as seen by the [[Hubble Space Telescope]]~~
	~~\| orbit_ref =~~
	~~<ref name=horizons>{{cite web~~
	~~\| last = Yeomans \| first = Donald K. \| date = 2006-07-13~~
	~~\| url = http://ssd.jpl.nasa.gov/?horizons~~
	~~\| title = HORIZONS System \| publisher = NASA JPL~~
	~~\| accessdate = 2007-08-08 }} — At the site, go to the "web interface" then select "Ephemeris Type: ELEMENTS", "Target Body: Mars" and "Center: Sun".</ref>~~
	~~\| epoch = [[J2000]]~~
	~~\| aphelion = 249,209,300 km<br />~~
	~~1.665861 [[Astronomical unit\|AU]]~~
	~~\| perihelion = 206,669,000 km<br />~~
	~~1.381497 AU~~
	~~\| semimajor = 227,939,100 km<br />~~
	~~1.523679 AU~~
	~~\| eccentricity = 0.093315~~
	~~\| period = 686.971 day<br />~~
	~~1.8808 [[julian year (astronomy)\|Julian years]]<br />~~
	~~668.5991 [[Timekeeping on Mars\|sols]]~~
	~~\| synodic_period = 779.96 day<br />~~
	~~2.135 Julian years~~
	~~\| avg_speed = 24.077 km/s~~
	~~\| inclination = 1.850°<br />~~
	~~5.65° to [[Sun]]'s [[Equator]]~~
	~~\| asc_node = 49.562°~~
	~~\| arg_peri = 286.537°~~
	~~\| satellites = 2~~
	~~\| physical_characteristics = yes~~
	~~\| equatorial_radius = 3,396.2 ± 0.1 km{{Ref label\|A\|a\|none}}<ref name=Seidelmann2007>{{cite journal~~
	~~\| last= Seidelmann\| first= P. Kenneth~~
	~~\| coauthors= Archinal, B. A.; A’hearn, M. F.; et al.~~
	~~\| title= Report of the IAU/IAGWorking Group on cartographic coordinates and rotational elements: 2006~~
	~~\| journal= Celestial Mechanics and Dynamical Astronomy~~
	~~\| volume=90 \| pages=155–180 \| year=2007~~
	~~\| doi=10.1007/s10569-007-9072-y~~
	~~\| url=http://adsabs.harvard.edu/doi/10.1007/s10569-007-9072-y~~
	~~\| accessdate=2007-08-28 }}</ref><br />~~
	~~0.533 Earths~~
	~~\| polar_radius = 3,376.2 ± 0.1 km{{Ref label\|A\|a\|none}}<ref name=Seidelmann2007/><br />~~
	~~0.531 Earths~~
	~~\| flattening = 0.00589 ± 0.00015 <!-- calculated from data in ref name=Seidelmann2007 -->~~
	~~\| surface_area = 144,798,500 km²<br />~~
	~~0.284 Earths~~
	~~\| volume = 1.6318{{e\|11}} km³<br />~~
	~~0.151 Earths~~
	~~\| mass = 6.4185{{e\|23}} kg<br />~~
	~~0.107 Earths~~
	~~\| density = 3.934 g/cm³~~
	~~\| surface_grav = 3.69 [[Acceleration\|m/s²]]<br />~~
	~~0.376 ''[[g-force\|g]]''~~
	~~\| escape_velocity = 5.027 km/s~~
	~~\| sidereal_day = 1.025957 day<br />~~
	~~24.62296 h<ref name=nasa/>~~
	~~\| rot_velocity = 868.22 km/h~~
	~~\| axial_tilt = 25.19°~~
	~~\| right_asc_north_pole = 21 h 10 min 44 s<br />~~
	~~317.68143°~~
	~~\| declination = 52.88650°~~
	\| albedo = 0.15<ref name="nssdc">{{cite web \| author=David R. Williams \| title=Mars Fact Sheet \| work=National Space Science Data Center \| publisher=NASA \| date=[[September 1]], [[2004]] \| url=http://nssdc.gsfc.nasa.gov/planetary/factsheet/marsfact.html \| accessdate=2006-06-24 }}</ref>
	~~\| magnitude = +1.8 to −2.91<ref name="nssdc" />~~
	~~\| angular_size = 3.5" — 25.1"<ref name="nssdc" />~~
	~~\| temperatures = yes~~
	~~\| temp_name1 = [[Kelvin]]~~
	~~\| min_temp_1 = 186 K~~
	~~\| mean_temp_1 = 227 K~~
	~~\| max_temp_1 = 268 K<ref name=nasa>{{cite web~~
	~~\| title = Mars: Facts & Figures~~
	~~\| publisher = NASA~~
	~~\| url = http://solarsystem.jpl.nasa.gov/planets/profile.cfm?Object=Mars&Display=Facts&System=Metric~~
	~~\| accessdate = 2007-03-06 }}</ref>~~
	~~\| temp_name2 = [[Celsius]]~~
	~~\| min_temp_2 = −87 °C~~
	~~\| mean_temp_2 = −46 °C~~
	~~\| max_temp_2 = −5 °C~~
	~~\| adjectives = [[Martian]]~~
	~~\| atmosphere = yes~~
	~~\| surface_pressure = 0.7–0.9 [[Pascal (unit)\|kPa]]~~
	~~\| atmosphere_density =~~
	~~\| atmosphere_composition = 95.72% [[Carbon dioxide]]<br />~~
	~~2.7% [[Nitrogen]]<br />~~
	~~1.6% [[Argon]]<br />~~
	~~0.2% [[Oxygen]]<br />~~
	~~0.07% [[Carbon monoxide]]<br />~~
	~~0.03% [[Water]] vapor<br />~~
	~~0.01% [[Nitric oxide]]<br />~~
	~~2.5 [[Parts per million\|ppm]] [[Neon]]<br />~~
	~~300 [[Parts per billion\|ppb]] [[Krypton]]<br />~~
	~~130 [[Parts per billion\|ppb]] [[Formaldehyde]]<br />~~
	~~80 [[Parts per billion\|ppb]] [[Xenon]]<br />~~
	~~30 [[Parts per billion\|ppb]] [[Ozone]]<br />~~
	~~10 [[Parts per billion\|ppb]] [[Methane]]~~
	}}

	The '''geology of Mars''', also known as '''areology''' (from [[Ancient Greek\|Greek]] {{lang\|grc\|Ἂρης}} ''[[Ares\|Arēs]]'' and {{lang\|grc\|-λογία}} ''[[-logy\|-logia]]''), refers to the study of the composition, structure, physical properties, history, and the processes that shape the [[planet]] [[Mars]].		The '''geology of Mars''', also known as '''areology''' (from [[Ancient Greek\|Greek]] {{lang\|grc\|Ἂρης}} ''[[Ares\|Arēs]]'' and {{lang\|grc\|-λογία}} ''[[-logy\|-logia]]''), refers to the study of the composition, structure, physical properties, history, and the processes that shape the [[planet]] [[Mars]].

wikademia>Dr. Eme: http://en.wikipedia.org/w/index.php?title=Geology_of_Mars&action=edit

2009-09-23T18:48:17Z

http://en.wikipedia.org/w/index.php?title=Geology_of_Mars&action=edit

Show changes

← Older revision		Revision as of 02:00, 1 December 2009
Line 1:		Line 1:
	~~{{Infobox Planet~~
	~~\| bgcolour = #E8AB79~~
	~~\| name = Mars~~
	~~\| symbol = [[Image:Mars symbol.svg\|25px\|Astronomical symbol of Mars]]~~
	~~\| image = [[Image:Mars Hubble.jpg\|240px\|The planet Mars]]~~
	~~\| caption = Mars as seen by the [[Hubble Space Telescope]]~~
	~~\| orbit_ref =~~
	~~<ref name=horizons>{{cite web~~
	~~\| last = Yeomans \| first = Donald K. \| date = 2006-07-13~~
	~~\| url = http://ssd.jpl.nasa.gov/?horizons~~
	~~\| title = HORIZONS System \| publisher = NASA JPL~~
	~~\| accessdate = 2007-08-08 }} — At the site, go to the "web interface" then select "Ephemeris Type: ELEMENTS", "Target Body: Mars" and "Center: Sun".</ref>~~
	~~\| epoch = [[J2000]]~~
	~~\| aphelion = 249,209,300 km<br />~~
	~~1.665861 [[Astronomical unit\|AU]]~~
	~~\| perihelion = 206,669,000 km<br />~~
	~~1.381497 AU~~
	~~\| semimajor = 227,939,100 km<br />~~
	~~1.523679 AU~~
	~~\| eccentricity = 0.093315~~
	~~\| period = 686.971 day<br />~~
	~~1.8808 [[julian year (astronomy)\|Julian years]]<br />~~
	~~668.5991 [[Timekeeping on Mars\|sols]]~~
	~~\| synodic_period = 779.96 day<br />~~
	~~2.135 Julian years~~
	~~\| avg_speed = 24.077 km/s~~
	~~\| inclination = 1.850°<br />~~
	~~5.65° to [[Sun]]'s [[Equator]]~~
	~~\| asc_node = 49.562°~~
	~~\| arg_peri = 286.537°~~
	~~\| satellites = 2~~
	~~\| physical_characteristics = yes~~
	~~\| equatorial_radius = 3,396.2 ± 0.1 km{{Ref label\|A\|a\|none}}<ref name=Seidelmann2007>{{cite journal~~
	~~\| last= Seidelmann\| first= P. Kenneth~~
	~~\| coauthors= Archinal, B. A.; A’hearn, M. F.; et al.~~
	~~\| title= Report of the IAU/IAGWorking Group on cartographic coordinates and rotational elements: 2006~~
	~~\| journal= Celestial Mechanics and Dynamical Astronomy~~
	~~\| volume=90 \| pages=155–180 \| year=2007~~
	~~\| doi=10.1007/s10569-007-9072-y~~
	~~\| url=http://adsabs.harvard.edu/doi/10.1007/s10569-007-9072-y~~
	~~\| accessdate=2007-08-28 }}</ref><br />~~
	~~0.533 Earths~~
	~~\| polar_radius = 3,376.2 ± 0.1 km{{Ref label\|A\|a\|none}}<ref name=Seidelmann2007/><br />~~
	~~0.531 Earths~~
	~~\| flattening = 0.00589 ± 0.00015 <!-- calculated from data in ref name=Seidelmann2007 -->~~
	~~\| surface_area = 144,798,500 km²<br />~~
	~~0.284 Earths~~
	~~\| volume = 1.6318{{e\|11}} km³<br />~~
	~~0.151 Earths~~
	~~\| mass = 6.4185{{e\|23}} kg<br />~~
	~~0.107 Earths~~
	~~\| density = 3.934 g/cm³~~
	~~\| surface_grav = 3.69 [[Acceleration\|m/s²]]<br />~~
	~~0.376 ''[[g-force\|g]]''~~
	~~\| escape_velocity = 5.027 km/s~~
	~~\| sidereal_day = 1.025957 day<br />~~
	~~24.62296 h<ref name=nasa/>~~
	~~\| rot_velocity = 868.22 km/h~~
	~~\| axial_tilt = 25.19°~~
	~~\| right_asc_north_pole = 21 h 10 min 44 s<br />~~
	~~317.68143°~~
	~~\| declination = 52.88650°~~
	\| albedo = 0.15<ref name="nssdc">{{cite web \| author=David R. Williams \| title=Mars Fact Sheet \| work=National Space Science Data Center \| publisher=NASA \| date=[[September 1]], [[2004]] \| url=http://nssdc.gsfc.nasa.gov/planetary/factsheet/marsfact.html \| accessdate=2006-06-24 }}</ref>
	~~\| magnitude = +1.8 to −2.91<ref name="nssdc" />~~
	~~\| angular_size = 3.5" — 25.1"<ref name="nssdc" />~~
	~~\| temperatures = yes~~
	~~\| temp_name1 = [[Kelvin]]~~
	~~\| min_temp_1 = 186 K~~
	~~\| mean_temp_1 = 227 K~~
	~~\| max_temp_1 = 268 K<ref name=nasa>{{cite web~~
	~~\| title = Mars: Facts & Figures~~
	~~\| publisher = NASA~~
	~~\| url = http://solarsystem.jpl.nasa.gov/planets/profile.cfm?Object=Mars&Display=Facts&System=Metric~~
	~~\| accessdate = 2007-03-06 }}</ref>~~
	~~\| temp_name2 = [[Celsius]]~~
	~~\| min_temp_2 = −87 °C~~
	~~\| mean_temp_2 = −46 °C~~
	~~\| max_temp_2 = −5 °C~~
	~~\| adjectives = [[Martian]]~~
	~~\| atmosphere = yes~~
	~~\| surface_pressure = 0.7–0.9 [[Pascal (unit)\|kPa]]~~
	~~\| atmosphere_density =~~
	~~\| atmosphere_composition = 95.72% [[Carbon dioxide]]<br />~~
	~~2.7% [[Nitrogen]]<br />~~
	~~1.6% [[Argon]]<br />~~
	~~0.2% [[Oxygen]]<br />~~
	~~0.07% [[Carbon monoxide]]<br />~~
	~~0.03% [[Water]] vapor<br />~~
	~~0.01% [[Nitric oxide]]<br />~~
	~~2.5 [[Parts per million\|ppm]] [[Neon]]<br />~~
	~~300 [[Parts per billion\|ppb]] [[Krypton]]<br />~~
	~~130 [[Parts per billion\|ppb]] [[Formaldehyde]]<br />~~
	~~80 [[Parts per billion\|ppb]] [[Xenon]]<br />~~
	~~30 [[Parts per billion\|ppb]] [[Ozone]]<br />~~
	~~10 [[Parts per billion\|ppb]] [[Methane]]~~
	}}

	The '''geology of Mars''', also known as '''areology''' (from [[Ancient Greek\|Greek]] {{lang\|grc\|Ἂρης}} ''[[Ares\|Arēs]]'' and {{lang\|grc\|-λογία}} ''[[-logy\|-logia]]''), refers to the study of the composition, structure, physical properties, history, and the processes that shape the [[planet]] [[Mars]].		The '''geology of Mars''', also known as '''areology''' (from [[Ancient Greek\|Greek]] {{lang\|grc\|Ἂρης}} ''[[Ares\|Arēs]]'' and {{lang\|grc\|-λογία}} ''[[-logy\|-logia]]''), refers to the study of the composition, structure, physical properties, history, and the processes that shape the [[planet]] [[Mars]].

Geology of Mars - Revision history

wikademia>Eme at 02:00, 1 December 2009

wikademia>Dr. Eme: http://en.wikipedia.org/w/index.php?title=Geology_of_Mars&action=edit