Astronauts embark on space walk at International Space Station

National

CAPE CANAVERAL, Fla. (NBC/AP) — Astronauts ventured out on their second spacewalk in less than a week Sunday to install powerful new solar panels outside the International Space Station.

France’s Thomas Pesquet and NASA’s Shane Kimbrough picked up where they left off Wednesday, when spacesuit and other problems prevented them from unrolling the first in a series of high-tech solar panels.

“Remember: You are butterflies with biceps today,” astronaut Megan McArthur radioed from inside.

The spacewalkers managed to bolt down the first solar wing last week, but had to delay making the electrical connections and unfurling the panel to its full 63 feet (19 meters) in length. That topped Sunday’s to-do list.

These new solar wings are designed to roll out like a red carpet, unlike the station’s old ones that unfolded like an accordion. They will give the aging station a much needed electrical boost, as demand for experiments and space tourists grows.

NASA originally allotted two spacewalks for the job — one for each solar panel being installed. But managers added a third spacewalk, given all the earlier problems. Pesquet and Kimbrough will go back out Friday to complete work on the second panel delivered by Space X earlier this month.

This first pair will augment the space station’s oldest solar wings, which are degrading after 20 years of continuous operation.

SpaceX will deliver two more pairs over the next year.

Although smaller than the originals, the new solar panels can generate considerably more power. The space station needs this reenergizing if NASA hopes to keep the space station running the rest of this decade, with private guests paying millions of dollars to come aboard.

A Russian film crew is scheduled to launch to the orbiting outpost this fall from Kazakhstan, followed by a string of rich businessmen. SpaceX is providing the rides from Cape Canaveral.

On Wednesday, the display control panel on Kimbrough’s suit conked out and he had to return to the air lock to reset it. Then his cooling system registered a momentary pressure spike. “Space is hard,” he later tweeted.

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The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Department of Science Education. The AP is solely responsible for all content.

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