Assignment Seven

The final Frontier

P1 Planet data

The  Earth is  one of a family of  eight planets.  All of these are  orbiting round the Sun.  Together with the Sun and the  8 planets  makes our  Solar System.  All eight  planets are  different in every respect.  For example, in shape,  size and conditions.  The distances between the planets are enormous.

Inner Planets	Mercury	Venus	Earth	Mars	Asteroids
Distance from the Sun (million Km)	60	110	150	230	-
Time to Travel once round the Sun ( Earth years)	0.2	0.6	1	2	-
Diameter (Km)	5000	12000	12800	7000	-

Outer Planets	Jupiter	Saturn	Uranus	Neptune
Distance from the Sun (million Km)	780	1400	2900	4500
Time to Travel once round the Sun ( Earth years)	12	30	84	160
Diameter (Km)	140000	120000	52000	50000

In addition to these 8 planets are 3 smaller dwarf planets. As of August 24, 2006, Pluto was no longer considered a planet and is instead described as a Dwarf Planet.

Dwarf Planets	Eris	Ceres	Pluto
Distance from the Sun (million Km)			6000
Time to Travel once round the Sun ( Earth years)			250
Diameter (Km)			3000