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

Question

Responses

diffuse edges
diffuse edges

dark area
dark area

central star remnant
central star remnant

spherical shape

Answer 1

The two correct answers for identifying a planetary nebula are:

1. central star remnant
2. spherical shape

Planetary nebulae typically have a central star that is the remnant of the original star and often exhibit a roughly spherical shape as they expand into space.