Studies show that March is the most geomagnetically active month of the year. The reason is springtime.
Space Weather News for March 18, 2019
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SPRINGTIME CRACKS ARE OPENING IN EARTH'S MAGNETIC FIELD: Studies show that March is the most geomagnetically active month of the year. The reason is springtime. Researchers have long known that around the time of the vernal equinox "cracks" tend to form in Earth's magnetic field. Solar wind pours in to energize magnetic unrest. Such a crack opened this weekend, sparking spectacular Northern Lights. Read today's edition of Spaceweather.com to learn more about the phenomenon.
NEW: Sign up for Space Weather Alerts and get an instant text message when magnetic cracks form.
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Above: This giant plume of green appeared over Tromsø, Norway, on March 16th in response to a magnetic "crack." Photo credit: Markus Varik. More: Aurora Photo Gallery.
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