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CAPE CANAVERAL, Fla. — Robonaut, the first out-of-this-world humanoid, is finally getting its space legs.

For three years, Robonaut has had to manage from the waist up.

This new pair of legs means the experimental robot — now stuck on a pedestal — is going mobile at the International Space Station.

“Legs are going to really kind of open up the robot’s horizons,” said Robert Ambrose from NASA’s Johnson Space Center in Houston.

It’s the next big step in NASA’s quest to develop robotic helpers for astronauts. With legs, the 8-foot Robonaut will be able to climb throughout the 260-mile-high outpost, performing mundane cleaning chores and fetching things for the human crew.

The robot’s gangly, contortionist-bending legs are packed aboard a SpaceX supply ship that launched Friday, more than a month late.

It was due to arrive this morning.

“Legs are on the way!” read a message Friday on its Twitter account, @AstroRobonaut.