The best ever image of a Cometary Globule has been released by the European Southern Observatory (ESO) from the Very Large Telescope (VLT) in the Atacama desert in Chile. It looks a lot like a nebula right? In actuality a cometary globule is a very specific type of nebula.  It’s very faint, and it’s formation is a matter of debate among the astronomical community.  A cometary globule is small, containing the mass of a few suns worth of material.  Compare this to a typical nebula, which has enough material to form thousands or even hundreds of thousands of stars. The...