Modeling Earth’s near-space environment and its electrical currents is challenging. A new study compares how four different models stack up against observations.Read More »Atmospheric Sciences
After geomagnetic storms, Earth’s corona abruptly increases in hydrogen density. For the first time, serendipitous observations have allowed researchers to investigate why.Read More »Planetary Sciences
The unexpected character of the beams, revealed by NASA’s Juno spacecraft, suggests that the processes that produce Jupiter’s auroras are unlike those on Earth.Read More »Space Science & Space Physics
The Van Allen radiation belts surrounding Earth shrink and swell due to plasma waves moving through them, an analysis of satellite data suggests.Read More »Geology & Geophysics
Evans, a pioneer of auroral physics, changed the way scientists thought about the aurora and magnetic fields and guided a new generation of researchers.Read More »
Low-latitude sightings of colorful hues in the sky likely to have been auroras indicate powerful geomagnetic storms buffeted Earth when some old chronicles were written, researchers report.Read More »Geology & Geophysics
A survey of bedrock conductivity across Spain improves predictions of how vulnerable the nation’s power grid is to solar storms.Read More »Space Science & Space Physics
A new study proposes a simpler theory to explain a class of electrons zipping around Earth, propelled by magnetic explosions.Read More »Atmospheric Sciences
Scientists demonstrate the capabilities and limitations of the mathematical model used to calculate solar irradiance using measurements from NASA’s Mars Atmosphere and Volatile Evolution (MAVEN).Read More »
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