Briley Lewis (she/her) is a freelance science writer and Ph.D. Candidate/NSF Fellow at the University of California, Los Angeles studying Astronomy & Astrophysics. Follow her on Twitter @briles_34 or visit her website www.briley-lewis.com.
Humans have been changing the atmosphere from Earth’s surface for nearly two centuries—but now in the Space Age, we’re altering it from outer space, too. Atmospheric scientists recently found traces of unexpected metals in the stratosphere, the second-lowest layer of the atmosphere where ozone resides and meteors burn up into shooting stars.
All told, about 10 percent of aerosol particles in the stratosphere contain metals. Atmospheric scientists aren’t sure exactly how these changes will affect Earth. The stratosphere contains tiny blobs of sulfuric acid, which are now infused with the metals from old spacecraft. The presence of those metals could change the chemistry of the stratosphere, including how big the sulfuric acid drops grow.
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Shortest 'fast radio bursts' ever discovered last only 1 millionth of a secondBriley Lewis (she/her) is a freelance science writer and Ph.D. Candidate/NSF Fellow at the University of California, Los Angeles studying Astronomy & Astrophysics. Follow her on Twitter briles_34 or visit her website www.briley-lewis.com.
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