Misc: men in black was responsible for doubling sales of what?

Questions

A "light year" measures ?

A "pigskin" is another name for a(n) ________?

A ___ can not move it's jaw side to side?

A _______ is a pact between a secular authority & the church.?

A _______ is the only standard international unit of measure still defined by a physical object, a bar composed of two elements?