Yes, I have heard of it. I did a hub on it also, because I wanted to learn more, and it is just fascinating to me. Luckily, I don't think it can do any damage to us, but it can affect power grids and other things. Ironically, I was joking today with my family how of all the days lately, today was extra bright, and sitting by the window at one point it got very warm! I was surprised we didn't hear more about it sooner, but it was great to know it when we did at least.