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World/National News

April 20, 2014

NASA's Robonaut finally getting legs

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 the private company’s fourth shipment to the space station for NASA and is due to arrive Easter Sunday morning.

Robonaut 2 — R2 for short — has been counting down the days.

“Legs are on the way!” read a message Friday on its Twitter account, @AstroRobonaut. (OK, so it’s actually a Johnson Space Center spokesman who’s doing the tweeting.)

Space Exploration Technologies Corp.’s unmanned capsule, Dragon, holds about 2 tons of space station supplies and experiments, Robonaut’s legs included.

Until a battery backpack arrives on another supply ship later this year, the multimillion-dollar robot will need a power extension cord to stretch its legs, limiting its testing area to the U.S. side of the space station. Testing should start in a few months.

Each leg — 4 feet, 8 inches long — has seven joints. Instead of feet, there are grippers, each with a light, camera and sensor for building 3-D maps.

“Imagine monkey feet with eyes in the palm of each foot,” Ambrose said.

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