@bobcromwell interesting! When there’s a normal annual ‘meteor shower’, the Earth is passing through some well understood more-dense collection of rocks in its usual path around the Sun. This looks like an unscheduled event though. I wonder if it’s some comet that passed through before, leaving bits of itself behind? But usually comets more ‘evaporate’, leaving smaller material. Or some collision of asteroids that left behind these things raining down? Or a UFO, probably an exploded UFO.