Radiation ring around Earth mysteriously appears, then dissipates
Two Van Allen belts temporarily became three, possibly in response to solar activity
By Puneet Kollipara, 17:13 PM February 28, 2013
High above Earth’s surface float two rings of energetic charged particles, and for about four weeks in September, they were joined by a third. The temporary ring may have formed in response to a solar shock wave that passed by Earth, researchers report online February 28 in Science.
The discovery could force scientists to revisit decades of ideas about the structure of the Van Allen belts, donut-shaped rings of radiation trapped in orbit by the planet’s magnetic field. Those revisions could...
Source URL: https://www.sciencenews.org/article/radiation-ring-around-earth-mysteriously-appears-then-dissipates