Sports Illustrated has taken Kate Upton to a place where few people have gone before: space. The blond model, who graced the cover of the 2012 and 2013 swimsuit issues, was photographed in a bikini in "zero-gravity space" for the upcoming 50th-anniversary issue, sources told the New York Post.

Sports Illustrated has taken Kate Upton to a place where few people have gone before: space.

The blond model, who graced the cover of the 2012 and 2013 swimsuit issues, was photographed in a bikini in �zero-gravity space� for the upcoming 50th-anniversary issue, sources told the New York Post.

Upton, wearing a silver swimsuit, was shot in a zero-gravity chamber with weightless, uh, assets and big hair, which made her �look like something out of Barbarella� (the 1968 movie in which Jane Fonda starred as a sci-fi vixen), the source said.

Last year, after Upton was photographed in Antarctica for the swimsuit edition, talk-show host Jimmy Fallon joked with her that her next cover should be shot in space.

�Think about this: There�s no gravity,� he quipped.

Reportedly, the magazine has also photographed a series of swimsuit-issue �legends� � such as Carol Alt, Tyra Banks, Christie Brinkley and Bar Refaeli � to celebrate the golden anniversary.

Editors haven�t said who will grace the cover.

The issue is to reach newsstands on Feb. 11.