Nebulae Quick Check

Question

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

Its edges have clear boundaries.
Its edges have clear boundaries.

Its edges do not have clear boundaries.
Its edges do not have clear boundaries.

It reflects only non-visible radiation.
It reflects only non-visible radiation.

It reflects only visible radiation.
It reflects only visible radiation.
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Answer 1

To characterize a nebula as diffuse means:

Its edges do not have clear boundaries.

This option indicates that a diffuse nebula has a more spread-out appearance without distinct limits, unlike more compact or well-defined nebulae.