In 2014, the International Space Station had to move three times to avoid lethal chunks of space debris and there is an increasing problem of satellites mysteriously breaking down. With first-hand accounts from astronauts and experts, Horizon reveals the scale of the problem of space junk. Our planet is surrounded by hundreds of millions of pieces of junk moving at 17,000 miles...$2019.10.07 原来太空垃圾有这么多和夸张的么?从人类进入太空时代以来所有发射的卫星在失去它本身功能的时候就成了一个太空垃圾,还有太空小碎片,随时都会击中飞行器,太恐怖了。这该怎么解决啊?$原来太空垃圾碎片那么多,还那么危险。一项新科技的发展总是不考虑后果,都是事后弥补啊……?$政治意图太明显, 你英国BBC的东西全是NASA, 还指名道姓我们中国, 不想想你们美国爹的西福特计划, 真是以减少太空垃圾为道德制高点来阻止其他国家发展太空活动!$共同资源需要大家一起来维护$快乐星球