Read the passage below and summarize it using one sentence. Type your response in the box at the bottom of the screen. You have 10 minutes to finish this task. Your response will be judge on the quality of your writing and on how well your response presents the key points in the passage. 

For decades, area specialists have distressed that a rushing little bit of orbital rubbish may someday smash an oversized fifty-five spacecraft in too many items and begin a series reaction, a slow cascade of collisions that may expand for hundreds of years, spreading chaos through the heavens. within the last decade some, as scientists came to agree that the number of objects in orbit had surpassed an essential mass or, in their terms, the essential spatial density, the purpose at that a series reaction becomes inevitable they grew additional anxious.

Early this year, when a period of time of growth, the federal list of detectable objects (four inches wide or larger) reached10,000, together with dead satellites, spent rocket stages, a camera, a tool and junkyards of whirling rubbish left over from probability explosions and harmful tests. thus our billion greenbacks satellites square measure in danger.

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