Question

What does it mean to characterize a nebula as diffuse?(1 point)
Responses

It 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**.