"Spacequakes" Discovered
The sun can dump enough energy into Earth's magnetic field to trigger
"spacequakes" in our planet's upper atmosphere, a new study has found.
The space weather phenomenon – technically a strong vibration in the
planet's magnetic field – can affect auroras and can spawn "space
twisters" capable of bringing down power lines.
In general, Earth's magnetic field lines can be thought of as rubber
bands
stretched taut by the solar wind, which is actually charged particles
flowing in all directions from the sun, said study co-author Vassilis
Angelopoulos, a space physicist at the University of California, Los
Angeles. Earth's magnetic tail is the part of the field that's stretched
out like a
windsock by the sun's steady bombardment.
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