The Planets.

What is a planet actually? Does an asteroid a planet? Nope. Does a comet a planet? Nope. A planet simply meant a body in orbit around the Sun, that reflected sunlight, and was not a planetary moon, asteroid, or comet.

There are two categories for planets based on their physical characteristics: the terrestrial planets and the gas giants.

Mercury, Venus, Earth and Mars are a terrestrial planets and these planets are the closest to the sun. Their characteristics is dense and rocky composition.

Jupiter, Saturn, Uranus, Neptune are gas giant planet that are found in the outer solar system. Their characteristics is massiveness and gaseous composition. 

Let us view the planets according to numbers. 
First is Mercury the nearest neighbor to the sun.

Mercury

Second is Venus which is named after the Roman goddess of love and beauty.

Venus

Third is of course our home sweet home, Earth.

Earth

Fourth planet is Mars which is the second smallest planet in the Solar System, after Mercury.

Mars

Fifth is Jupiter which is the largest planet in the Solar System.

Jupiter

The sixth planet is of course my all time favorite, Saturn.

Saturn

The seventh planet is the blue planet that is called Uranus.

Uranus

The eighth planet is Neptune which is the farthest planet from the Sun.

Neptune