Length of year 365 1/4 days 678 Earth days A Mars year is about 2 Earth years long Length of day 24 hrs 24 2/3 hrs Almost the same Distance from Sun 150 million km, 1 AU 225 million km, 1.5 AU AU = distance from Earth to Sun Axial Tilt 23.5 degrees 25.2 degrees Same seasons (longer on Mars) Gravity (at surface) 9.8 m per second squared 38 % of Earth's Less mass =&gt; less gravity Soil Rocky particles + organics and oxygen Rocky particles + oxygen, no known organics Organics are an important component in soils on the Earth Atmosphere 78 % nitrogen, 21 % oxygen 95 % carbon dioxide Water and plants have changed the Earth's atmosphere over time Surface Pressure 1 bar ~7/1000 bar You'd need a spacesuit on Mars Clouds Water vapor, water ice, some dust Water ice, dust, dry ice (frozen carbon dioxide) No rain, less cloud cover than on the Earth Polar Cap (South) Water ice Dry ice, water ice Much colder than on Earth Polar Cap (North) Water ice Mostly water ice Much colder than on Earth Temperature Range -127 F to 136 F or -88 C to 58 C -197 F to 63 F or -127 C to 17 C Mars can be just above freezing at the equator Liquid Water (Surface) Over 75% of surface None now Liquid Water (underground) Yes Possible Wells on Mars?
(9.8 m per second; squared; 38 % of Earth's Less mass =&gt; less gravity Soil Rocky particles + organics and oxygen Rocky particles + oxygen, no known organics Organics are an important component in soils on the Earth Atmosphere 78 % nitrogen, 21 % oxygen 95 % carbon dioxide Water and plants have changed the Earth's atmosphere over time Surface Pressure 1 bar ~7/1000 bar You'd need a spacesuit on Mars Clouds Water vapor, water ice, some dust Water ice, dust, dry ice; L:at surface) (You; 'd need; a spacesuit on Mars Clouds Water vapor) (No rain, less cloud; cover; ) Context(No rain , less cloud cover,List([805, 830))):(no known organics Organics; are; an important component in soils on the Earth Atmosphere 78 % nitrogen, 21 % oxygen 95 % carbon dioxide Water and plants) Context(no known organics Organics are No rain , less cloud cover,List([452, 830))):(A Mars year; is; about 2 Earth years long Length of day 24 hrs 24 2/3 hrs Almost the same Distance from Sun 150 million km, 1 AU 225 million km, 1.5 AU AU = distance from Earth to Sun Axial Tilt 23.5 degrees 25.2 degrees Same seasons (longer on Mars; T:Length of year 365 1/4 days 678 Earth days) (-127 C to 17 C Mars; can be; just above freezing at the equator Liquid Water (Surface) Over 75% of surface None now Liquid Water (underground) Yes)
No rain , less cloud cover,List([805, 830)) no known organics Organics are No rain , less cloud cover,List([452, 830))
9.8 m per second You No rain, less cloud no known organics Organics A Mars year -127 C to 17 C Mars
squared 'd need cover are is can be
38 % of Earth's Less mass =&gt less gravity Soil Rocky particles + organics and oxygen Rocky particles + oxygen, no known organics Organics are an important component in soils on the Earth Atmosphere 78 % nitrogen, 21 % oxygen 95 % carbon dioxide Water and plants have changed the Earth's atmosphere over time Surface Pressure 1 bar ~7/1000 bar You'd need a spacesuit on Mars Clouds Water vapor, water ice, some dust Water ice, dust, dry ice L:at surface
a spacesuit on Mars Clouds Water vapor
an important component in soils on the Earth Atmosphere 78 % nitrogen, 21 % oxygen 95 % carbon dioxide Water and plants
about 2 Earth years long Length of day 24 hrs 24 2/3 hrs Almost the same Distance from Sun 150 million km, 1 AU 225 million km, 1.5 AU AU = distance from Earth to Sun Axial Tilt 23.5 degrees 25.2 degrees Same seasons (longer on Mars T:Length of year 365 1/4 days 678 Earth days
just above freezing at the equator Liquid Water (Surface) Over 75% of surface None now Liquid Water (underground) Yes