Who am I

I have yellow and black stripes and I have a sting at the back......

I have 6 faces,12 edges,8 corners and all my faces are equal

I'm a shape of a sphere,I'm made of gas and I'm the biggest planet in the solar system

I'm made of cardboard,at the top of me can open and when I'm not open I look like a cube

I'm yellow, I have black spots but you can not see them and I'm the biggest star