SUMMARY: NASA scientists created false clouds on Sunday to study the near space environment in the Earth's ionosphere. Four rockets were launched from NASA's Wallops Flight Facility, and they released a chemical called trimethylaluminum (TMA) at various altitudes: from 90 to 175 kilometres. These false clouds were visible for hundreds of kilometres and allowed scientists to better understand wind movements in the high atmosphere. TMA is non-toxic, and used as heartburn medicine and a water purifier.
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