NASA spots unexpected X-shaped structures in Earth's upper atmosphere — and scientists are struggling to explain them

NASA's GOLD mission found unexpected X- and C-shaped structures in the plasma of Earth's ionosphere. Researchers have likened our upper atmosphere to "alphabet soup." https://www.livescience.com/space/the-sun/nasa-spots-unexpected-x-shaped-structures-in-earths-upper-atmosphere-and-scientists-are-struggling-to-explain-them