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| | | | | | | Facts about Mars
Hubble's close encounter with Mars
| | | | Orbit | 227 940 000 km (1.52 AU) mean distance from Sun | | Diameter | 6794 km | | Martian day (sol) | 24 hours, 37 mins 22 seconds | | Martian year | 669 Martian days (sols), 687 Earth days | | Average temperature | 218 K (-55 degrees C) | | Minimum temperature | 140K (-133 degrees C) (winter pole) | | Maximum temperature | 300K (27 degrees C) (summer dayside) | | Surface area | 144 x 106 km2, about the same as the land area of Earth | | Atmospheric pressure at surface | 6.35 mbar, that is less than one hundredth Earth's atmospheric pressure. | | Atmospheric composition | 95.32% carbon dioxide, 2.7% nitrogen, 1.6% argon, 0.13% oxygen | | Moons | Phobos - diameter 22 km, orbit 5981 km from surface
Deimos - diameter 12 km, orbit 20,062 km |
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Last update: 19 November 2004 | |
| | Looking at Mars  More about... Mars Express mission factsRelated articles Mars Express instrumentsThe search for lifeChances of life are linked to waterWater on early Mars?Signatures of lifeGeography of Mars
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