Debris warning postpones NASA spacewalk

NASA has postponed a spacewalk that was scheduled for Tuesday after receiving a space debris warning for the International Space Station. Just hours before the astronauts were due to venture out of the ISS, the agency said on its Twitter account that "due to the lack of opportunity to properly assess the risk," it had decided to delay the Nov. 30 spacewalk until more information was available. More

(Source: CNN - Dec 1)