space junk

基本解释

Red-faced astronomers only discovered it a few days before and until then they thought it was a piece of space junk.
這塊紅色的物躰被發現以及有幾天的時間了，在最後被証實其實衹是一塊太空垃圾。
For the past several decades, Earth has been growing a ring of its own—made of defunct satellites, old rocket boosters, and other “space junk.
在過去幾十年裡，地球一直在種植自己的環——由失傚的衛星、陳舊的火箭推進器以及其它“太空垃圾”搆成。
NASA space junk scientists believe that all – or nearly all – of the parts of their 20-year-old dead satellite safely plunged into the Pacific Ocean, likely missing land.
NASA太空垃圾科學家相信，他們已服役20年的失傚衛星所有或幾乎所有的零部件可能象失蹤的土地一樣已安全地沉入大平洋。

They include nets,giant collecting arms and powerful laser beams that would move or destroy space junk.
Dr.Craig Smith,the chief executive of Electro Optic Systems, says laser beams fired from the ground could protect astronauts and satellites by targeting space junk that travels at potentially devastating speeds.
"They are all hurtling around in space at 36,000 kilometers per hour and so even a 1mm piece of space junk can destroy or damage a satellite because it all comes from either dead satellites, satellites which have broken up, satellites which had fuel left in them and exploded."

Some fly by night piece of space junk that doesn't even have a name?
NPR: A Down-to-Earth View of the Planet Debate

unwanted objects or material left in space by human activity, such as pieces of old or destroyed equipment

objects such as artificial satellites, material discarded from space stations, etc that remain in space after use