Christopher Nolan’s 2014 film, Interstellar has part non-fiction and part fiction aspects regarding portrayal of life in space.
Firstly is the matter of gravity – during the astronauts’ flight into space there is no gravity, so they have to hold onto bars and objects to maintain stability (as seen in the image below); however when they arrive in the main spaceship they start to spin the spacecraft to generate 1g of gravity which allows them to walk around as they would on earth. Although physics seems to support this “logic”, in the present day astronauts on the ISS do not have gravity.
Second fictional aspect in the film is hibernation. The astronauts travel through space where time flow varies; so for longer journeys they lay in a pod half filled with water, the pod then closes and they are able to set a time for when they want to wake up.
Aside from the fiction there are a lot of facts regarding the spaceship interior and functions. For example:
The amount of computers.
Seatbelts to secure themselves in place.
The docking of a node in spacecraft.
Bars to hold themselves in place.
Supplies secured in plastic bags.
Other minor fictional details include robots which accompany and assist the astronauts; as well as the lack of floating water or hair standing up due to the presence of gravity in the spacecraft.