https://www.livescience.com/space/stunning-array-of-400-rings-in-a-reflection-nebula-solves-a-30-year-old-star-formation-mystery-space-photo-of-the-week
The discovery is the first direct observational confirmation of a theory for how young stars feed on, and then explosively expel, surrounding material.
in areflection nebulastunningarrayrings