Planets in Our Galaxy

We found out some information about what we need to survive on Earth, and we've drawn pictures, and written riddles 

to test ourselves. 

We hope the information is useful for the alien

 who crash-landed on the moon and is trying to get back to his home.

Now we have a fourth message.

He needs to know about the planets in our galaxy. 

Can you help?

What are the planets in our galaxy?

Do you know the order they are in, from closest to the sun to furtherest from the sun?

Do you have your own riddle?