The invatation would be black with stars on is. There would also be an alein in side the card saying will you come to my party. It would have the information like: date,time and place.
Decor:
The room would be black. There would be stars every were.The planets would be on the ceiling. Life size cardboard cut outs of aliens and astronots.
Food:
The food be would planets with saturns rings(spagetti and meatballs.A inter galactic spaceship with shooting stars(cheeseburger with fries).