Technology

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Around 11 miles above Earth’s surface, leftover bits from rockets and spacecraft are lingering in our planet’s atmosphere that could potentially have a lasting effect on the climate.

A group of scientists flew a sensitive tool attached to the nose of a special research plane, sniffing out aerosols in the atmosphere.

They found significant amounts of aluminum and exotic metals in Earth’s stratosphere, which could alter the second layer of the atmosphere, according to a new study published Monday in the Proceedings of the National Academy of Sciences.

Scientists have long suspected that Earth’s upper atmosphere might be changing as a result of the burgeoning space industry, but this area, which extends up to 32 miles (51 kilometers) above the surface, is quite challenging to study.

In order to test that theory, the team behind the study operated a NASA WB-57 airplane to sample the atmosphere 11.8 miles (19 kilometers) above the ground in Alaska.

That number is only expected to increase as the space industry continues to launch more satellites and spacecraft to Earth’s orbit and beyond.

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