After delay, NASA astronauts set for spacewalk to replace faulty space station antenna

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Two NASA astronauts were set to embark on a spacewalk on Thursday to replace a faulty antenna on the International Space Station (ISS), after a 48-hour delay prompted by an orbital debris alert later deemed to be of no concern.NASA TV planned live coverage of the 6-1/2-hour spacewalk, scheduled to begin a

Two NASA astronauts were set to embark on a spacewalk on Thursday to replace a faulty antenna on the International Space Station , after a 48-hour delay prompted by an orbital debris alert later deemed to be of no concern.

Their objective is to remove a defective S-band radio communications antenna assembly, now more than 20 years old, and replace it with a spare stowed outside the space station. The four arrived at the space station Nov. 11 in a SpaceX Crew Dragon capsule launched from the Kennedy Space Center in Florida, joining two Russian cosmonauts and a NASA astronaut, Mark Vande Hei, already aboard the orbiting outpost.

But NASA calculates that remaining fragments continue to pose a"slightly elevated" background risk to the space station as a whole, and a 7per cent higher risk of puncturing spacewalkers' suits, as compared to before Russia's missile test, Weigel told reporters on Monday.

 

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