A spacewalk planned for Tuesday to repair a faulty antenna on the International Space Station was postponed indefinitely, NASA said, citing a “debris notification” it received for the orbiting research laboratory. Two U.S. astronauts had been scheduled to venture outside the space station at 7:10 a.m. ET to begin their work, facing what NASA officials had called a slightly elevated risk posed by debris from a Russian anti-satellite missile test this month. But about five hours before the outing was to have commenced, NASA said on Twitter that the spacewalk had been called off for the time being. “NASA received a debris notification for the space station. Due to the lack of opportunity to properly assess the risk it could pose to the astronauts, teams have decided to delay the Nov. 30 spacewalk until more information is available,” the space agency wrote on Twitter. It was not made clear how …