A colossal coronal mass ejection (CME) has struck Earth, triggering severe (G4) geomagnetic storm conditions that could push the northern lights much farther south than usual tonight (19–20 January).

If current forecasts hold, observers in the northern U.S. will not have another chance to view the aurora borealis Sunday night, when the Kp index drops to three. Where Will The N ...

NOAA is predicting a Kp index of five out of nine for Sunday night, meaning the northern lights could appear brighter, visible farther from the north pole and appear with more “motion and formations.” ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. This voice experience is generated by AI. Learn more. This ...