Although he took his break with Petty in stride, his feelings shifted when the guitarist fired up Mudcrutch again in 2007.
Current KP-index values — a measure of the intensity of the geomagnetic storm — are nearly off the charts at around 10. Usually, a KP of 8 will make aurora visible in the region away from city lights.
A California startup wants to bounce sunlight from orbit onto Earth after dark, and the idea is stirring up serious debate.