Probing Mars

People on Earth have observed Mars through telescopes based on Earth and in space. Early space probes carried telescopes and cameras to observe

Table 7.1 Details of Mars

Distance from Sun

227 940 000 km (1.52 AU)

Diameter

6794 km

Mass

6.42 x 1023 kg (0.107 times Earth's mass)

Density

3.95 g/cm3 or 3950 kg/m3

Orbital eccentricity

0 0

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