Howard Wolowitz is still in space.

The fictional aerospace engineer and Expedition 31 crew member was seen floating aboard the International Space Station (ISS) during last week's season premiere of the CBS hit television series " The Big Bang Theory." On this week's episode, airing Thursday night, Wolowitz is still off the planet, 250 miles (400 km) up.

Of course, he is not really on the space station. The real ISS Expedition 31 ended in July. Wolowitz, or rather actor Simon Helberg, was on a sound stage at the Warner Bros. studio lot in Burbank, Calif.

His spacecraft surroundings never orbited the Earth, but they did play previous host to the Energizer Bunny for a Super Bowl commercial and were seen in the 2004 feature film, "The Day After Tomorrow."

But Helberg's, or rather Wolowitz's, crew did include a real life NASA astronaut, Mike Massimino, and, further blurring the lines between art and life, the fictional Expedition 31 crew patch that they wore on the show placed Wolowitz's and Massimino's names side-by-side. [ Photos: TV's "Big Bang Theory" Geek Chic ]

Behind the scenes, the job of delivering Wolowitz to the orbiting outpost didn't fall to a Russian rocket but rather to The Big Bang Theory's production designer John Shaffner, set decorator Ann Shea and their teams.

Scavenging for space parts As it turns out, you can rent a space station.

Last May, when the show's fifth season finale called for Wolowitz to launch onboard a Russian Soyuz spacecraft, Shaffner went looking for one.

"The first thing that we always do in this business is ask, 'Well, can we rent it? Did somebody make one first?' And unfortunately, we discovered that there weren't any Soyuz replicas to be found," Shaffner told collectSpace.com in an interview.

For the Soyuz, Shaffner and Shea received photos from NASA, turned to a Kansas museum to find dimensions, and scavenged parts from an aerospace junkyard in Los Angeles to piece together a realistic capsule. But in the course of his seeking out the spacecraft, Shaffner found a space station.

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How 'Big Bang's' Howard flew to space