一、

The earth is our solar system has eight planets,44-4.6 billion years old.Is nearly a third of the sequence is located,mercury and Venus.In eight planets in the ranking is the fifth size.In English,the earth is the only one not from the Greek and Roman mythology of the name.A word of English from the Earth in the English and Germanic.There are many other languages,of course.In Roman mythology,the earth is the goddess Tellus - fertile land.Gaia:(Greek,mother earth),

二,

Jupiter is far from the sun SuiXing anyang,the fifth planet distance,is one of the solar system and is eight planets in the eight planets,one of the largest planet than all of the other planets quality 2 times.Jupiter greeks called Zeus (king of gods of Olympus mons,ruler of the kingdom and Rome),it is protecting the son of Saturn.

三、

Mercury is closest to the sun,the eight planets in the solar system according to sequence the planet ranked first.Mercury in diameter less than IO on Titan,but it is more sunhe.Mercury rotates cycle is 58.65 days,mercury in 88 the earth round the sun can 47.89 kilometers,average speed in the solar system,is the fastest planetary motion.The sun appears to be on the mercury in the earth than twice as big as the sun than the earth,the sun is six times stronger.Mercury toward the sun's side,the temperature is very high,can reach 400 degrees Celsius above.

四、

Saturn ZhenXing or fill in anyang,because the Saturn cycle,approximately 295,000 in ancient China has 28,Saturn is almost every year,in a god or fill the accommodation,so called ZhenXing or star,119300 kilometers in diameter,the second is the solar planets.Its neighbors are very similar to Jupiter,with liquid hydrogen and helium is also covered with oceans,above the thick clouds.Saturn,the winds along the direction of the wind can be more than 1,600 kilometers per hour.Saturn is the storm clouds above the clouds,contains a large amount of crystallization of ammonia.

五、

Neptune is orbits the sun of the 8th planet,is the fourth round the sun.Neptune < Uranus in diameter on bigger than it,but the quality.Neptune is about the quality of the 17 times,and similar twins Uranus for low density,quality is about the earth 14 times.With Roman mythology Neptune Neptune (because Neptune is sea,so Chinese translation for Neptune.