Solar system• Our solar system has 8 planets and one

dwarf planet.• Every thing in space orbits except the

sun.

Sun• Our sun will eventually wear out in about 5 billion

years from now.• The sun is the largest object in space.

Mercury• Mercury is the closes planet to the sun.• Mercury is about the size of earth’s moon.

Venus• Venus is the 2nd planet closest to the sun.

• Venus is about the same size as earth.

Earth• Earth is the largest inner planet.• Earth is the only planet in space that

supports life.

Mars • Mars’ nickname is called the red planet.• Mars is small –its diameter is only half of earth’s. • Mars also has a robot.

Asteroid belt • The asteroid belt is between Mars and

Jupiter.• The asteroid belt is made up of a bunch of

asteroids together.

Jupiter• Jupiter is the largest planet in our solar

system.• Jupiter’s diameter is more than 11 times

the diameter of earth’s.

Saturn• Saturn has rings that are visible from earth

with a telescope.• Saturn has at least 31 moons.

Uranus• Uranus is another gas giant. • Uranus rotates on its side as it orbits the

sun.

Neptune• Neptune’s atmosphere is mostly made up

of hydrogen and helium.• It is one of the windiest places in our solar

system.

Pluto• Pluto’s atmosphere is mostly nitrogen.• Pluto’s moon is almost as big as Pluto

itself.

Comet• Some comets become well known because

their obits bring them close to earth.• A comet is a ball of rock ,ice, and frozen

gases.