Rocket stage
S-IVB (Saturn upper stage)
Rockets
Overview
The restartable single-J-2 upper stage used as the Saturn V third stage and the Saturn IB second stage; its restart performed trans-lunar injection for Apollo.
Components & hardware
Knowledge connections
Sources
The primary and reference sources this topic draws on.
- NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.