I meant to mention that it includes a scene in which one astronaut rescues another who has floated off the outside of the ship by using an oxygen tank as a reaction engine.
ISTM that a similar rescue occurs in an Isaac Asimov story. Can any of our resident SF fans confirm this? Did Heinlein use it (also)? They are the two SF writers whose work I read most, but that was 40-50 years ago.