Planets / skysphere built using Space Graphics Toolkit (from the Unity Store) & various planetary textures from around the web.
Spacecraft created by Herminio Nieves @2013
Sounds from freesound.org – see links for licensing…
http://www.freesound.org/people/Wolfsinger/sounds/25761/
http://www.freesound.org/people/troutstrangler/sounds/25878/
http://www.freesound.org/people/Timbre/sounds/75521/
http://www.freesound.org/people/warwickallison/sounds/115759/
http://www.freesound.org/people/PlymouthJCliffords/sounds/164842/