Our neighbour; Mars
| MARS: |
| Mass: | 642 x 10^21 kg |
| Diameter: | 6787 km |
| Average distance from Sun: | 228 x 10^9m |
| Rotation period: | 24,6h |
| Revolution period: | 686.98 days |
| Mean density : | 3940 kg/m³ |
| Force of gravity: | 3,7m/s² |
| Orbit inclination : | 1,85º |
| Moons: | 2 |
Mars Information:
- The fourth planet from the Sun and the third smallest in our solar system.
- Named for the Roman god of war because it is seen flaming red in the night.
- Mars does not have active plate tectonics.
- It has valleys, volcanos, mountains and white poles that shrinks and grows with the seasons.
- Mars is a cold and dry lifeless planet.
- Humans have looked for signs of life on Mars for over a hundred years.
- Mars Global Surveyor (a spacecraft from earth) is orbiting the planet.
- 95% of the atmosphere is carbon dioxide.
- Surface temperatures ranges from -140° C to 15° C.
Pictures of Mars:
| Mars at Opposition | March 1997 | North Polar Cap |
| 4 | 5 | 6 | 7 |
Tour guide:
Copyright © 1999 Magnus Rasmussen
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