The Local Bubble and the Galactic Neighborhood . ... Currently, the Sun is passing through a Local Interstellar Cloud (LIC), shown in violet, which is flowing away from the Scorpius-Centaurus Association of young stars. The LIC resides in a low-density hole in the interstellar medium (ISM) called the Local Bubble , shown in black. ... The Gum Nebula , shown in green, is a region of hot ionized hydrogen gas. ... NASA Web Site Statements, Warnings, and Disclaimers . NASA Official: Jay Norris. ...