The gap between them has recently been proposed to be caused by very low frequency waves from lightning strikes in the atmosphere.
The gap between them has recently been proposed to be caused by very low frequency waves from lightning strikes in the atmosphere. Sometimes viewed as a solar-driven current, one is thought to result from electrons stuck in the earth's geomagnetic field, while the one closer to Earth has as it source the decay of neutrons from cosmic ray collisions. The latter approaches within 200 km of the Earth's surface in the South Atlantic, where nuclear testing in the 1960s caused their brief amplification. A purported obstacle to the Apollo missions, for 10 points name these regions of radiation bearing the moniker of a recently deceased University of Iowa physicist.
The gap between them has recently been proposed to be caused by very low frequency waves from lightning strikes in the atmosphere.
{Van Allen belts}