Thursday, 4 October 2012

The 9 Planets

Inner Planets
Outer Planets
Mercury, Venus, Earth and Mars
Jupiter, Saturn, Uranus, Neptune and Pluto
Made of rocks
Made of gases
Has an atmosphere
Do not have a suitable atmosphere for living things to survive
Temperature is hotter
Temperature is colder


Mercury.gif (24267 bytes)
  • Mercury is the second smallest planet in the solar system.
  • The temperature is too hot to support life.
  • It is  the closest planet to the sun. 
  • It is also very close to the same size as the moon.


  • Venus is called the evening star because to us on earth it is so bright.
  • Its also call Earth's twin because it is almost the same size as Earth and it looks identical.
  • It is the closest to earth but it does not have water and life on Venus.
  • Venus gets so hot during the day it can melt a lead cannonball.
  • It gets up to 484 degrees celcius on the side facing the sun.
  • Venus gets so hot because it has clouds that circle the planet with heat inside of the clouds.
  • This makes it hotter than Mercury.
  • Venus orbits the sun slowly. It also has alot of thunderstorms.


  • Earth is the only planet known to have life.
  • Most of earth is covered by water.
  • The rest is covered by land, mountains, and valleys.
  • Earth is the third closest planet to the sun.
  • It is covered by many oxygens mostly nitrogen and oxygen.
  • The atmosphere is what gives us air to breathe, thats why we live on planet Earth.
  • The Earth orbits around the sun.
  • It takes one year to completely rotate the sun.
  • It also rotates and spins on its axis.
  • Each day it spins around one whole time.
  • The tilt in the axis is responsible of are seasons. Otherwise it would be the same temperature all year long.


  • Mars is called the red planet bacuse it is red.
  • On Mars it can get very cold. On its hot days it is still cold.
  • They have poles just like earth. North and South.
  • During the martian winter, ice caps can be seen at the poles.
  • Mars has two moons, Phobos and Deimos which have unusual shapes.
  • Scientists believe that these potato shaped moons were astroids captured by Mars' gravitational pull.


  • Jupiter is the fifth planet from the Sun and the largest planet in the Solar System.
  • It is a gas giant with mass one-thousandth that of the Sun but is two and a half times the mass of all the other planets in our Solar System combined.


Saturn-2.gif (71552 bytes)
  • Saturn is the sixth planet from the Sun and the second largest planet in the Solar System, after Jupiter.
  • Named after the Roman god Saturn, its astronomical symbol represents the god's sickle.
  • Has three wide rings. 
  • They can be seen with a telescope. It composed mostly of ice particles and some debris.


  • Uranus is the seventh planet from the Sun.
  • It has the third-largest planetary radius and fourth-largest planetary mass in the Solar System. 
  • It is a kind of watery planet, pretty far away from the Sun.
  • It is the coldest planet in the Solar System.


  • The Planet Neptune is the eighth planet from the sun.
  • It is also known as the Blue Giant.
  • Neptune is the fourth and outermost of the gas giant planets and also has rings.
  • Its atmosphere is mostly hydrogen and helium.
  • In Roman mythology Neptune was the god of the Sea.
  • Neptune and Uranus are much alike.
  • It is covered with a blue ocean of liquid methane.


  • Pluto is the farthest planet from the Sun so the temprature is very low and it is very cold.