Naval radio signals may cause the formation of a barrier observed during geomagnetic storms that is seemingly impenetrable by relativistic electrons.
NASA’s Juno spacecraft is “hearing whistles” all over the place on Jupiter, a type of natural plasma waves called whistlers that are sometimes associated with atmospheric lightning.
A Japanese satellite reveals rapid and surprisingly frequent transport of molecular ions from the ionosphere to the magnetosphere, under not only extreme but also moderate geomagnetic conditions.
Precipitations of electrons with energies greater than 30 kiloelectron volts from the slot region penetrate at low altitude and can contribute to destroy ozone.
A new empirical model of energetic electrons from Van Allen Probes data includes pitch angle analysis, revealing insights about radiation belt energization and loss processes.
A powerful numerical model reveals how space weather disturbs magnetic field at geosynchronous orbit.
A NASA stereo-imaging mission called TWINS continues to push the boundaries of what we know about the region of space close to Earth.
A new analysis of three space storms reveals the mechanisms of particle loss from the Van Allen belts.
Mysterious plasma waves from space are generating displays of aurora near Earth's poles.
When solar storms pounded Earth during Halloween in 2003, scientists were eager to measure their effects. But new research shows one satellite was seeing "ghost" particles that probably weren't real.