Stars and the Bubble Nebula . ... Credit Copyright: Brian Lula Explanation: Seemingly adrift in a cosmic sea of stars and gas, this delicate, floating apparition is cataloged as NGC 7635 -- The Bubble Nebula . In this wide-angle view, the Bubble nebula lies at the center of a larger complex of shocked glowing gas about 11,000 light-years distant in the fair constellation Cassiopeia . ... NASA Web Site Statements, Warnings, and Disclaimers . NASA Official: Jay Norris. ...