Protoplanetary nebula
Nebula surrounding a dying star / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about Protoplanetary nebula?
Summarize this article for a 10 year old
SHOW ALL QUESTIONS
Not to be confused with Protoplanetary disk.
A protoplanetary nebula or preplanetary nebula[1] (PPN, plural PPNe) is an astronomical object which is at the short-lived episode during a star's rapid evolution between the late asymptotic giant branch (LAGB)[a] phase and the subsequent planetary nebula (PN) phase. A PPN emits strongly in infrared radiation, and is a kind of reflection nebula. It is the second-from-the-last high-luminosity evolution phase in the life cycle of intermediate-mass stars (1–8 M☉).[2]: 469