June 21, 2019: What do you get when you mix the summer solstice with one of the deepest Solar Minima in a century? Extreme noctilucent clouds. “On June 21st, at least 80% to 90% of our sky was covered by bright electric-blue waves,” reports Jacob Kuiper of Steenwijk, The Netherlands. “It was unbelievable, so bright … Continue reading Extreme Noctilucent Clouds over Europe