Dead satellites and other junk are dumping metals into Earth's fragile upper atmosphere, with unknown implications.

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Researchers have discovered another pollutant: evaporated metals from burned-up space trash floating in Earth's stratosphere.

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the same atmosphere that protects the ozone layer.

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In March and April, high-altitude research flights over Alaska and the Midwest

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Scientists used mass spectrometers to sample stratospheric air. Many rocket and satellite metals were found in astonishing proportions.

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Researchers sampled stratospheric air with mass spectrometers. They found unusual concentrations of rocket and satellite metals.

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which make up most stratospheric particles and affect the ozone layer and climate.

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They make up most stratospheric particles and affect the ozone layer and climate.

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Due to rising launches of satellites, researchers expect value to rise to 50% or more in the future decades.

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Launches and satellites are rising, thus researchers expect value to rise to 50% or more in the next decades.

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