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

Question

Responses

dark area
dark area

spherical shape
spherical shape

central star remnant
central star remnant

diffuse edges

Answer 1

The two correct answers for identifying a planetary nebula are:

1. spherical shape
2. central star remnant

These characteristics are key features of planetary nebulae. They often exhibit a roughly spherical appearance and contain the remnant of the star at their center.