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You can't hear thunder in space but that didn't dampen Scott Kelly's excitement at witnessing the massive storm hovering over the East Coast of the United States from his perch on the International Space Station.

"Rare #thundersnow visible from @Space_Station," he tweeted.

Thundersnow is just what it sounds like: snow accompanied by thunder and lightning. It happens when the atmosphere is especially unstable.

Kelly recently marked the 300th day of his historic year-long stay on the International Space Station.