The cloud has baffled astronomers since its discovery in 2018. Now, a new study offers a possible cause for its appearance. https://www.wired.com/story/the-exotic-physics-behind-a-mysterious-1000-mile-cloud-on-mars/?utm_brand=wired-science&utm_campaign=aud-dev&utm_medium=social&utm_social-type=owned&utm_source=twitter-science