New analysis confirms hypothesis for source of mysterious auroral “dunes”

Revisiting the aurora “dunes”: A time-lapse video recorded by a Scottish aurora borealis hobbyist Graeme Whipps was used to determine the speed of the phenomenon at over 200 m/s. Several years ago, amateur astronomers first spotted a rare type of aurora nicknamed “the dunes” because of its luminous, rolling wave patterns. Last year, astronomers proposed […]