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Minggu, 12 Desember 2010

Mars and Jupiter

Mars and Jupiter

Mars

Mars is know as red star, its atmosphere is very thin, its distance to the sun =  226 billion km, with its revolution period is 887 days, while its rotation = 24 hours, 37 minutes, 23 seconds. Mars has two satellites those are Deimos, satellite that rises in west and sets in east.

The Natural condition of Mars:
  1. Its average temperature is cooler, this is caused by its atmosphere is very thin.
  2. It has volcano, ravine and wide crater.
  3. Its pole is in form of terraces and covered by ice.

Jupiter

Jupiter is largest planet in our solar system. The rotation of its atmosphere is very slow if compared with the rotation of Jupiter itself, so it causes red spot around its atmosphere itself. The distance of Jupiter to the Sun is 778 billion of km, its revolution period = 23 years. Meanwhile its rotational takes time is 10 days. The space shuttle that observes Jupiter among other are: Pioner 10 and 11, and Voyager 1 and 2.

Until now, Jupiter is known has more than 30 satellites and several of them are: Ganymede (largest satellite of diameter 130,000 km), Io, Eruopa, Callisto, Amathea, Leda, Himalia, Elara, Lysthea, Anare, and Pasphipae.