Why is she strong?
Though she dealt with significant hearing loss, she was able to not only invent a star classification system but also to classify more stars than anyone before or since. She worked with several other ladies under Edward C. Pickering at Harvard University. That type of collaborative, supportive effort and environment is very rare in science and hugely understated. Neil DeGrasse Tyson’s Cosmos series has an entire segment dedicated to Cecilia Payne, with whom Cannon collaborated.
Keep it civil, people.