Eskimo Nebula (NGC 2392)
Scientists believe that a ring of dense material around the star's equator, ejected during its red giant phase, created the nebula's shape. This dense waist of material is plodding along at 115,000 km/h, preventing high-velocity stellar winds from pushing matter along the equator. Instead, the 1.5-million-km/h winds are sweeping the material above and below the star, creating the elongated bubbles. The bubbles are not smooth like balloons but have filaments of denser matter. Each bubble is about 1 light-year long and about half a light-year wide. One possible explanation is that these objects formed from a collision of slow- and fast-moving gases.
Related category• NEBULAE AND STAR CLUSTERS
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