Hourglass Nebula

Introduction
Hourglass Nebula, also known as Engraved Hourglass Nebula, MyCn18, ESO 97-1, Etched Hourglass Nebula and PN MyCn 18, is a Planetary Nebula located inside The Musca Constellation. Engraved Hourglass Nebula was discovered before 1918 by American Astronomer Annie Jump Cannon and American Astronomer Margaret Walton Mayall. The hourglass shaped is produced by a fast stellar wind, expelling gasses Helium, Nitrogen, Carbon and Oxygen.