coronal hole

These "coronal holes" appear from time to time and are perfectly normal... even if they look a little scary.
The coronal hole recently triggered several auroras here on Earth.
(Story continues below image.) Photo of the vast coronal hole taken by the Atmospheric Imaging Assembly device aboard NASA's
A space telescope aimed at the sun has spotted a gigantic hole in the solar atmosphere — a dark spot that covers nearly a quarter of our closest star, spewing solar material and gas into space.
The $1.27-billion (1 billion euros) SOHO satellite was launched in 1995 and is flying a joint mission between NASA and the
Will this coronal hole affect us here on Earth the way a powerful solar flare recently caused a temporary radio communications
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