Sunspots occur pretty frequently, but the size and number of spots changes with an 11-year pattern. Thousands of much smaller magnetic regions on the solar surface are constantly appearing and disappearing. They gradually change the larger magnetic patterns created by the sunspots. I think these small changes eventually build up and cause the catastrophic explosions in the Sun's atmosphere. By comparing different events and looking at lots of measurements I hope to figure some of it out.
Every day is different.
Quite a variety. That's part of the fun. Astronomy is fascinating. The Sun is the only star we can study up close, so it tells us a lot about the universe that we cannot learn in any other way. Solar astronomy is also practical.