Hidden Magnetic Portals Around Earth
A NASA-sponsored researcher at the University of Iowa has developed a way for spacecraft to hunt down hidden magnetic portals in the vicinity of Earth.
These portals link the magnetic field of our planet to that of the sun.
Flux transfer event (FTE): A FTE occurs when a magnetic portal opens in the Earth’s magnetosphere through which high-energy particles flow from the Sun. This connection, while previously thought to be permanent, has been found to be brief and very dynamic.
Earth’s magnetosphere and the Sun’s magnetic field are constantly pressed against one another on the dayside of Earth. Approximately every eight minutes, these fields briefly merge, forming a temporary “portal” between the Earth and the Sun through which high-energy particles such as solar wind can flow. The portal takes the shape of a magnetic cylinder about the width of Earth. Current observations place the portal at up to 4 times the size of the earth.
Source and author: ScienceAtNASA Portals