28 November 2023
A precursor science gap is the difference between the knowledge we have today, and the knowledge needed to finalize the architectures of the three large missions endorsed by Astro2020. It is not one of the strategic science goals of those missions, which were defined by Astro2020. Instead, a precursor science gap is a tactical concept - an area where work now can make a difference to defining the mission architecture or implementation.
Input on precursor science gaps relevant to the NASA Cosmic Origins Program should be submitted via the online form here
Submission to this process does not guarantee inclusion in the updated gap list.
**Please refer to the attached letter for a more detailed summary and definitions of the precursor science solicitation**