NASA has published a retrospective of how crews aboard the International Space Station have marked Halloween over the years. According to the agency, crew members celebrate individually or as an entire crew, wearing costumes that are sometimes spooky and sometimes scary but always creative, often made from materials available aboard the station.

The roundup includes photos from several expeditions. In 2025, a trio of Expedition 73 astronauts dressed for Halloween. Expedition 70 astronauts celebrated in 2023, and in 2022 Expedition 68 astronauts dressed as popular video game and cartoon characters, using stowage containers in their costumes and holding improvised trick-or-treat bags. Other images show Expedition 66 crew members with Halloween cards and members of Expedition 61 in 2019.

The retrospective also reaches further back, including Expedition 57 crew members posing in costumes inside the Kibo Japanese Experiment Module, Expedition 53 crew members in 2017, and the Expedition 21 crew in 2009. NASA notes that the station remains a scientific platform and points to more than 25 years of continuous human presence aboard it.