Mars magnetic tail: NASAâs MAVEN spacecraft discovers magnetotail for the first time in solar system Mars magnetic tail: NASAâs MAVEN spacecraft discovers magnetotail for the first time in solar system Mars Could Provide A Unique Opportunity To Observe The Minute Details Of Such Unusual Events And To Expand Our Knowledge Of The Vast Systems In The Universe. News Nation Bureau | Edited By : Neha Singh | Updated on: 23 Oct 2017, 10:44:54 AM New Delhi: NASA’s MAVEN spacecraft has discovered a huge magnetic tail trailing behind Mars. According to reports, this is something unique that has been twisted by interaction with the solar wind was never seen before in our solar system.