EXPLORING MARS 
 

Earth and Moon: Primary characterictics
 

 

Diameter ( km )

Mass ( kg x 10^24 )

Density ( kgm^-3 )

Mean Orbit (km x 10^6) [solar]

Diurnal Period - day ( days )

Orbital Period - year ( days )

Orbital Inclination( ° )

Axial Inclination ( ° )

Average Surf Temperature ( K )

Gravity ( g )

Rel Magnetic Field Strength
MOON

 

3,476

0.07

3,340

150

27.3

27.3

5.2

1.5

118 to 378

0.16

negligible
EARTH

 

12,756

5.97

5,520

150

1

365.25

nil

23.5

203 to 328

1

1

Earth is the only planet that supports life
Earth is the largest solid object we know of
Earth has the strongest magnetic field of the inner planets
The Earth shows little evidence of cratering.
The Earth is the only planet that exhibits tectonic activity

 

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