Science Analysis Groups (SAGs) are groups of scientists convened for a finite period of time (usually one or two years) to address a specific question of interest to NASA astrophysics. The SAG activity aims to produce one or more reports at the end of its term that will be delivered to the Astrophysics Division Director. SAGs can be formed in response to questions that emerge from discussions within a SIG or in response to a request for information from the Astrophysics Division Director.
Many SAGs operate across multiple astrophysics themes, with chairs selected from the community.