I am Second Planet

I am the third planet from the sun. I orbited by one moon.

I am also called as the blue planet and the living planet.

Who am I?

I am the nearest planet to the sun.

I am the smallest planet in the solar system.

Who am I?

I am the fifth planet from the sun.

I am the fastest spinning planet in the solar system.

Who am I?

It is Orange. It is big and thick.

It is a popular vegetable in autumn and spring. 

You can carve it in Halloween.

What is it?

What five-letter word becomes shorter if you add two letters to it?