A geomagnetic storm is a large-scale disturbance of Earth’s magnetosphere caused by enhanced coupling between the solar wind and the geomagnetic field, typically following coronal mass ejections or high-speed solar wind streams from coronal holes. It is characterized by intensified magnetospheric convection, ring current enhancement, and reconfiguration of current systems such as the auroral electrojets. Storm development and recovery phases are quantified by indices like Dst and Kp, reflecting global magnetic field perturbations. Geomagnetic storms drive strong ionospheric currents, modify radiation belt populations, enhance auroral activity, and can induce geomagnetically induced currents in conductive technological infrastructures.
The effects of extreme space weather may be larger than previously thought, research in the journal Nature reveals. The paper, titled "Regression to the mean can explain saturation of geomagnetic storms," is led by Dr. Nithin ...
Planetary Sciences
Jul 15, 2026
0
44
A team at the Applied Physics Lab is working to understand the complex science behind predicting invisible threats that can quickly cripple electric grid infrastructure on Earth.
Earth Sciences
Jul 10, 2026
0
52
For decades, scientists have searched for a clear link between the sun's explosive storms and the weather that occurs on Earth. A breakthrough study from the University of New Hampshire reveals that in the hours and days ...
Earth Sciences
Jun 28, 2026
0
28
In May 2024, auroras were observed at unusually low latitudes across the globe, lighting up skies that rarely see such displays. Inside Earth's magnetosphere, the region of space surrounding our planet and dominated by its ...
Astronomy
Jun 26, 2026
2
42
A University of Iowa-led physics team has detailed the extreme expansion of a magnetic cloud that originated from a huge, gaseous explosion on the sun. In a new study, the researchers describe the inflated magnetic cloud ...
Astronomy
Jun 24, 2026
1
18
The weather on Earth can get pretty messy sometimes. But in space, it can be wild, and the effects can be far-reaching. Solar flares, giant explosions on the sun, can send out streams of energy that block radio communications ...
Planetary Sciences
Jun 3, 2026
0
21
On a special night, if you are lucky, you might catch a faint red glow quietly lighting up Japan's sky, stretching low along the horizon and easy to miss if you are not looking carefully. Subtle and diffuse, it probably appears ...
Astronomy
May 20, 2026
0
24
A joint European-Chinese spacecraft blasted into orbit Tuesday to investigate what happens when extreme winds and giant explosions of plasma shot out from the sun slam into Earth's magnetic shield.
Planetary Sciences
May 19, 2026
0
32
A joint European-Chinese spacecraft is set to blast off Tuesday to investigate what happens when extreme winds and giant explosions of plasma shot out from the sun slam into Earth's magnetic shield.
Planetary Sciences
May 17, 2026
0
111
When solar storms strike Earth, they can disrupt power grids, rail systems, satellites, and even marine life. These effects arise because solar wind and geomagnetic activity disturb the magnetosphere–ionosphere system, generating ...
Astronomy
May 6, 2026
0
17
