From: Strength models of the terrestrial planets and implications for their lithospheric structure and evolution
Mercury
Venus
Earth
Mars
Semi-major axis (AU)
0.39
0.72
1.00
1.52
Radius (km)
2439
6052
6378
3394
Gravity (m/s2)
3.70
8.87
9.78
3.69
Density (g/cm3)
5.43
5.20
5.51
3.93
Surface temperature (K)
440
730
280
220
Crustal thickness (km)
35
15
7
50