Who carried forward the work of Annie Jump Cannon after her?
Edward C. Pickering
No one, her work remained largely unexpanded
Unknown
Albert Einstein
Answer
The answer is unknown. It is likely that many people carried forward her work after her, as her work was very influential and important. It is also possible that her work was continued by her students or colleagues, as she was a professor at Harvard College Observatory.
Shooting for the Stars: The Remarkable Journey of Annie Jump Cannon