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ENGADGET

"This appears to be this comet's first-ever journey into the inner Solar System and it is expected to pass much closer to the Sun than most comets, " said Tony Farnham of the University of Maryland.

BBC: Comet Ison caught on film by Deep Impact craft

Not enough to let significant radiation into the inner belt, but enough that the study authors wanted to take a closer look at the data.

FORBES: A Powerful Solar Storm Could Render Satellites Inoperable For Years