We may have just witnessed some of the strongest auroras in 500 years

Green and red auroras shine over a lit-up house at night.

This month's ramped-up auroras may have been even more remarkable than we thought.

The auroral displays that wowed observers around the world two weekends ago, including folks as far south as Florida in the U.S. and Ladakh in northern India, may have been among the strongest such light shows since record-keeping began.