Dark lightning happens at cruising altitude for some planes. If a plane should pass near a bolt of dark lightning, said Pallu, its passengers could receive 0.3 sieverts of radiation in an instant.

Dark lightning — gamma-rays (pink in this simulated image) that result from waves of electrons (one shown, yellow) colliding with atoms in the air — may sporadically strike airplanes and ...

A tornado warning was issued in several counties, and storms filled the sky with lightning and dark cloud formations. The NWS confirmed Tuesday night that a tornado was located east of Sneedville ...

"Dark lightning." / Earth & Energy / Lightning / Storms. May 25, 10:30 AM EDT by Frank Landymore. Image by Yuuki Wada, Osaka University.

Unlike visible lightning, someone hit by dark lightning would not be immediately hurt. Radiation equivalent to 10 chest X-rays. A new study by researcher Melody Pallu, presented in Chicago, US, on ...