Astronaut Jeffrey Williams prepares to beat Scott Kelly's record for days spent in space

NASA is preparing to send three astronauts to the International Space Station on Friday, following the recent return of Scott Kelly to Earth. Alexey Ovchinin, Jeffrey Williams, and Oleg Skripochka will lift off from Kazakhstan around 3:26 a.m. Saturday local time.

Williams is a three-flight veteran and said the Soyuz spacecraft the men will be taking to the Space Station is "quite the ride," according to CBS News. "It's better than an E-ticket ride at Disneyland, I guess you could say. It only takes nine minutes to get to orbit, and in that time, you're going 17,500 miles an hour."

Williams, 58, has spent a total of 362 days in space already. With the completion of this next expedition, he will beat Kelly's record of 520 days in space, reaching 534 in late August.

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"We've got a wide variety of science that's ongoing in the space station, and there's no exception during my coming stay," Williams said. "I think what's most interesting to me, because it supports future exploration, is the study of ourselves. We're guinea pigs up there, so we're doing a lot of studies on the human body, trying to understand the impacts of the environment on us so we can develop countermeasures. Those end up in some ways being the more challenging ones, but they're also the more interesting ones personally."