Magellanic Clouds
However, the gas was not mapped, and the connection to the two Magellanic Clouds was not made. The Magellanic Stream as such was discovered as a Neutral Hydrogen (HI) gas feature near the Magellanic Clouds by Wannier &amp; Wrixon in 1972. Its connection to the Magellanic Clouds was made by Mathewson et al. in 1974.