It was "space junk" again that disturbed NASA! After the successful launch of the space shuttle Discovery on Sunday, the US space agency NASA was vexed by another big problem on Monday.

NASA reported that the International Space Station team may move the ISS because of a potentially lethal piece of space debris, and if it happens, it will cause a slight detouring for the space shuttle Discovery.

According to the space agency, a breakaway piece of space junk from a Russian satellite is likely to pass near the International Space Station on March 17, just one day before the space shuttle Discovery is scheduled to dock with the ISS. If the piece of space debris comes enough to ISS, NASA will have to move the ISS out of the way of the space junk, and it will force the space shuttle Discovery to recalculate its own path to the ISS.

Space junk is worrying NASA, as a lethal piece of space debris, last week, came dangerously close to ISS, forcing the three ISS astronauts to take shelter in the Soyuz TMA-13 capsule, attached to ISS to transport astronauts back in an emergency.

NASA's worries continued to grow while the Discovery closed in on the International Space Station on Monday. The shuttle is scheduled to arrive at the orbital outpost on Tuesday at 5:13 p. m. EDT (2113 GMT) for an abbreviated eight-day stay.

However, NASA took a big sigh of relief, when it got good news from ISS on Monday evening. Commander Mike Fincke and his colleagues on the ISS informed the Mission Control, "There will be no need to move the space station. The piece of space junk threatening the orbiting outpost will not come close enough to create any problem".

NASA later reported that the International Space Station will not be moved and the Discovery will not have to change its course to dock with the space base Tuesday.

Leroy Cain, chairman of the Mission Management Team, said that this is not the first time that space junk is threatening the space station or the space shuttle. He said, "Space debris is an issue for us. There are objects we have to contend with, we have to be constantly mindful. It is a random occurrence that we have had to deal with them in such a short succession."