http://m.news.nate.com/view/20150322n21966

http://m.news.nate.com/view/20150322n21966

@PopMech We have a dangerous space junk problem. Here are 6 ways to solve it popme.ch/601327pN pic.twitter.com/KmgLh2w2aG  
@PopMech 님의 트윗을 확인해보세요 :
https://twitter.com/PopMech/status/580454899512668160?s=09

satellite tracker etcᆞ
우주공간 크기 1mm 이동경로 추적 가능 의미ᆞ

US Military Satellite Explosion No Threat to European Space Missions -

http://m.space.com/28904-satellite-explosion-no-threat-esa-says.html?cmpid=514648_20150324_42608856&adbid=580421353939025921&adbpl=tw&adbpr=15431856

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