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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...。晚会突显“家国情怀”这一山东特色，从小家、家乡、国家的不同维度诠释“家”的概念，策划内容呈现，塑造山东形象，彰显山东的家国气度。。