This spaceship paper model is a very detailed Firefly-class transport ship Serenity, named after the Serenity Valley, captained by Malcolm Reynolds, based on the TV series Firefly, the papercraft created by B@F. Ninety-page model over 80 cm long, scale around 1:72.
There are other Serenity paper models on the site:
Firefly – Serenity Spaceship Free Paper Model
Firefly-class Transport Spaceship Serenity Papercraft
Spaceship Serenity Ver.3 Free Paper Model Download
Firefly - Firefly-class Transport Spaceship Serenity Ver.4 Free Paper Model