Actually, he isn't. He's just good. (Did I sound like Howard there? I was trying to sound like Howard.)

By Season 6, CBS's "The Big Bang Theory" was one of the biggest shows on TV, but even it couldn't afford to send a man to space. So, they recreated it with some creative set design, a rental, a platform and the magic of acting.

The appearance of weightlessness was achieved by putting Howard on an invisible (to the camera) platform.

"There was a very long, sort of skinny platform that a person could lie on and it would almost look like they were swimming through in weightlessness," production designer John Shaffner said in an interview with CollectSpace.com.

But he admitted it was up to the actors, most notably Simon Helberg as Howard, to really sell it: "They studied and really did a remarkable job with acting the weightlessness."

As for the set, that was comparatively simple — there's a company called WonderWorks that has a replica of the International Space Station that it rents out to film productions.

Getting him to this faux-station was harder. No one had made a replica of the Russian Soyuz spacecraft that's used to ferry astronauts to and from the real space station, so Shaffner and his team had to make one themselves.

Their quest for accuracy was made a little easier by input from one of the guest stars: real-life NASA astronaut and engineer Mike Massimino, who told Shaffner their set was realistic — and realistically uncomfortable.

"He said, 'Wow, you guys really did an amazing job!'" Schaffner recalls of Massimino's reaction. "'This really feels like it.'"

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