Which of the following factors helps explain why planetary nebula are NOT usually spherical?
A) magnetic fields
B) accretion disk
C) binary companion
D) all of the above

Question

Quizplus · Accepted Answer

All of the factors listed can influence the shape of a planetary nebula. Magnetic fields can guide the flow of material, accretion disks can focus outflows along their axis, and a binary companion can distort the shape through gravitational interactions or by contributing additional material or angular momentum.

Which of the Following Factors Helps Explain Why Planetary Nebula