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

Question

Responses

spherical shape
spherical shape

central star remnant
central star remnant

diffuse edges
diffuse edges

dark area

Answer 1

The two correct answers for identifying a planetary nebula are:

1. spherical shape
2. central star remnant

These features are characteristic of planetary nebulae, which typically exhibit a roughly spherical shape and contain a central remnant star.