ScienceAugust 26, 2026
electrojet
eh-LEK-troh-jet
Definition
A concentrated, high-altitude electrical current flowing within the ionosphere, often associated with auroral activity.
Etymology
The word is a portmanteau formed from 'electro-' (referring to electricity) and 'jet' (referring to a high-speed, focused stream or current).
In the news
In the article, the 'westward auroral electrojet' is used as a measurement index (SuperMAG) to test whether Earth's magnetic response to solar wind stays linear rather than flattening out.
For decades, scientists thought Earth’s geomagnetic response would hit a ceiling as solar storms intensified. A NASA-led Nature study published in July 2026 found that apparent limit was probably a measurement artefact: once the uncertainty was corrected,
Read the full article ↗Space Daily