World space powers meet to discuss space debris  

多国航天机构研讨应对太空垃圾 毫米碎级片达几千吨

太空活动产生的碎片对航天器很危险。目前，毫米级以上的空间碎片总质量达几千吨，数量为几千万或者上亿。《地心引力》中，摧毁卫星试验产生的碎片，像子弹一样击穿轨道上的一切物体；连锁反应产生更多碎片，毁坏了所有重要的空间站。 [查看全文]

World major space powers met in Beijing on Monday to report on the progress made in coping with space debris at the 32nd Inter-Agency Space Debris Coordination Committee (IADC) meeting.

At the meeting, Xu Dazhe, director of the China National Space Administration (CNSA), said his organization has put into place an action plan, a coordination mechanism and team to tackle space debris.

"As a responsible space power, China attaches great importance to solving the problem," said Xu.

Tian Yulong, secretary-general of the CNSA, said China has preliminarily established a space debris monitoring and early warning system, and adopted various protection measures such as frequently de-orbiting out-of-use satellites.

The IADC, founded in 1993, is the sole inter-governmental organization for coordinating activities of different space administrations and boosting technology cooperation and exchanges in the field of space debris.

The National Aeronautics and Space Administration (NASA) from the US, the European Space Agency and the Russian Federal Space Agency, and space organizations from several other countries attended the IADC meeting.