Respuesta :
When a Nebula is characterized as a diffuse nebula, it means that its edges do not have clear boundaries. The final option is correct.
A nebula is a collection of dust and particles in space that form a cloud-like structure. Nebula can be classified and sub-classified many times. The largest classification is :
- Galactic Nebula
- Galactic Nebula Extra-Galactic Nebula
which can then be further classified as regular or diffused nebulae.
The most common type of nebula is the diffused type. This category can then be subdivided into emission, reflective, and a dark nebula, depending on if they create their light, reflect light, or are dark. The diffuse nebula gets its name from the fact that it has no well-defined borders or edges.
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