NASA Discovers a Long-Sought Global Electric Field on Earth
After 60 years of searching, scientists found the global electric field extending Earth’s atmosphere into space. It took a journey to the Arctic, a new instrument, and a powerful rocket to find it, NASA reports.
A rocket team reports the first successful detection of Earth’s ambipolar electric field: a weak, planet-wide electric field as fundamental as Earth’s gravity and magnetic fields.
The field was first hypothesized more than 60 years ago, the ambipolar electric field is a key driver of the “polar wind,” a steady outflow of charged particles into space that occurs above Earth’s poles.
This electric field lifts charged particles in our upper atmosphere to greater heights than they would otherwise reach and may have shaped our planet’s evolution in ways yet to be explored.