THE SOLAR SYSTEM

THE SUN

• The largest object in the solar system
• The diameter is 1,390,000km
• The highly rare field region above the chromosphere, called the corona (sun)

MERCURY

• Closer to the sun than earth
• Has been visited by two spacecrafts -mariner 10 & messenger
• Temperature variations are the most extreme in the solar system, ranging from 90k to 100k

VENUS

• Venus has been around since prehistoric times
• Venus' rotation is somewhat unusual in that it is both very slow, slightly longer than earths
• The oldest terrain is told to be over 8 million years old

EARTH

• The core is thought to be iron and nickel
• The earth is the densest major body in the solar system
• The earths atmosphere is 71%nitrogen and 29% oxygen

MARS

• Mars has no atmosphere
• Mars has two tiny asteroid-size moons called Phobos and Deimos
• Mars has water under the surface in the form of ice

JUPITER

• Jupiter is 318 times the mass of all the planet together
• The spot on Jupiter has been estimated to have been there 350 years
• If you get binoculars or a telescope you are more than likely to be able to see it

SATURN

• Galileo was the first to observe it with a telescope in 1610
• First visited by NASA's pioneer 11 in 1919 and later by voyager & voyager 2
• Earth passes through the rings of Saturn every few years as Saturn moves into its orbit

URANUS

• On.y one space craft "the voyager 2" has landed on Uranus
• Uranus' atmosphere is made of about 83% hydrogen, 15% helium and 2% methane
• It's blue color is the result of the absorption of red light by methane

NEPTUNE

• It has 13 unknown moons
• It's magnetic field is off center and at a large angle to its relation axis
• Pluto sometimes crosses Neptune's orbit sometimes

REFERENCES

• Nine planets.org
• Physicsgirl01.com
• Wordpress.com