Question

QuestionWhat does it mean to characterize a nebula as diffuse?(1 point)ResponsesIt reflects only visible radiation.It reflects only visible radiation.It reflects only non-visible radiation.It reflects only non-visible radiation.Its edges have clear boundaries.Its edges have clear boundaries.Its edges do not have clear boundaries.

Answer 1

To characterize a nebula as diffuse means that **its edges do not have clear boundaries.** A diffuse nebula appears spread out and lacks the sharp outlines that are typically seen in other types of nebulae.