Answer:
Against the sun I protect your eyes and am often worn on the face of spies
I go through a door but never go in, and never come out. What am I?
As a state in America I am round on both sides and high in the middle.
I stand in one place yet I fill a whole room. I can be filled with molten rock and come in every hue.
I am a shimmering field that reaches far. Yet I have no tracks and am crossed without paths.
Whatโs a carpetโs favorite sport?