The Solar System

The Solar System is one of many systems in the Milky Way, a galaxy in the Universe. It special to us because we are in it. The Solar System is a group of planets circling a star, in our case the Sun. Each planet may have many moons orbiting them. The number of planets have changed over the year, with at some cases the Sun and the Moon counting as planets as well as many Dwarf planets. Currently there are 8 planets in the solar system.

Age: 4,568,000,000 years
Location: Local Interstellar Cloud, Local bubble, Orion Cygnus Arm, Milky Way
Mass: 1.0014 Solar Masses
Nearest Star: Proxima Centuari (4.22 light years)
Nearest System: Alpha Centuari system (4.37 light years)

Stars: 1
Planets: 8
Dwarf Planets: 5
Satellites: 443
Comet: 3,340

Distance from the Centre of the Milky Way: 27,000 light years
Orbital Speed: 220 km/s

Planet	Orbital Period (d)	Day (hours)	Satellites	Diameter (km)	Average Temp. (dc)	Distance from Sun (km)
Mercury	87.969	1,408	0	4,878	340	57,000,000
Venus	224.7	5,832	0	12,104	465	108,000,000
Earth	365.26	24	1	12,756	9	150,000,000
Mars	686.98	25	2	6,787	-41	228,000,000
Jupiter	4,332.82	10	63	142,800	-150	779,000,000
Saturn	10,755.70	11	62	120,000	-170	1,430,000,000
Uranus	30,687.15	17	27	51,118	-200	2,880,000,000
Neptune	60,190.03	16	13	49,528	-210	4,500,000,000