20 ideas for a Fabulous Outer Space Party | Artsy Craftsy Mom All things space and astronauts for a space birthday party #spaceparty . A full Outer Space Party Plan – Invitations , decor, food, games & gift ideas . Blast off to birthday fun with this Outer Space party! Your mini cosmonauts will love the space-themed food and decorations. Out of this World birthday party. Earth and Space Exploration day.