How can a planetary nebula be identified? Select the two correct answers.(1 point)

Question

Responses

central star remnant
central star remnant

diffuse edges
diffuse edges

dark area
dark area

spherical shape

Answer 1

The two correct answers for identifying a planetary nebula are:

1. central star remnant
2. spherical shape

Planetary nebulae often have a central star remnant, typically a white dwarf, and they are generally observed to have a roughly spherical shape.