Category
page 1Superbubbles
Local Bubble
cavity in the interstellar medium which contains the Local Interstellar Cloud

superbubble
thumb|220x220px|The superbubble Henize 70, also known as N70 or DEM301, in the [[Large Magellanic Cloud]]
In astronomy a superbubble or supershell is a cavity which is hundreds of light years across and is populated with hot (106 K) gas atoms, less dense than the surrounding interstellar medium, blown against that medium and carved out by multiple supernovae and stellar winds. The winds, passage and gravity of newly born stars strip superbubbles of any other dust or gas. The Solar System lies near the center of an old superbubble, known as the Local Bubble, whose boundaries can be traced
N44
emission nebula
Orion–Eridanus Superbubble
superbubble
Anticenter shell
supershell located outside of the galaxy