Hector LepageThomas Constantin
Tiphaine WillocqMelissa Pommier
Mars : observations
Diameter : 6794 kilometres Weight : 6.42 billion tonnesMars is the fourth planet and the seventh
biggest one of the solar system.
Mars characteristics
Distance Earth-Mars : 0.37 astronomic unit (a.u)
Gravity : 1/3 of the Earth gravity 2 satellites : -Phobos -Deimos
It makes a turn on itself in 24 hours and 37 minutes.
It makes the turn of the sun in 687 days.It is tilted at 24°.
There are many craters because a lot of stars fall on Mars .
Highest temperature : - 3°CLowest temperature : - 133°CAverage temperature : -63°C
Atmosphere of Mars
Gas : - 95.3 percent of carbon dioxide - 2.7 percent of nitrogen - 1.6 percent of argon - 0.15 percent of oxygen - 0.03 percent of water
There is no greenhouse effect on Mars.The surface is radioactive because of the
cosmic sun rays.