-Rotating Gas Cloud

 IC1396 is a huge cloud of gas and dust, a star-forming factory 100 light years across. Massive, hot, young stars in the center have blown an enormous cavity in the center of the nebula, their fierce stellar winds and blasting ultraviolet light eating the cloud away from the inside out. J-P Metsävainio is a Finnish astrophotographer who took several images of this sprawling cloud, broke them up into layers, made a computer surface model of the structure, then remapped it all into different frames seen from different angles. The finished product is this jaw-dropping three-dimensional animation. I’ll note this is an approximation to the real structure of the nebula, an educated guess. But it gives an incredible feel to the object and a real sense of what it must really be like.