MAVEN

"NASA’s Mars Atmosphere and Volatile EvolutioN (MAVEN) mission observed a sudden disappearance of solar wind while in orbit around the Red Planet. The solar wind then resumed as normal 2 days later."

https://cosmosmagazine.com/space/astronomy/mars-nasa-solar-wind/?utm_source=Cosmos+Magazine&utm_campaign=7cd5f5c8d9-RSS_EMAIL_CAMPAIGN&utm_medium=email&utm_term=0_3f5c04479a-7cd5f5c8d9-181027409&mc_cid=7cd5f5c8d9&mc_eid=3e3d9f7a52