How do nebulae get their color?

Answer 1

A nebula could be either bright or dark.Gas and dust in the nebula reflect light. Dark nebula dust hide light in the background.

From Levy's Deep Sky Objects, pages 86–97: Particles of carbon, silicate, or iron, coated in water, ice, methane, and ammonia, make up the cosmic dust of a nebula.

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Answer 2

Nebulae are colored by the gases they contain and the kinds of light they emit or reflect. For example, gases that contain hydrogen typically emit red light, while gases that contain oxygen typically emit green or blue light, and gases that contain nitrogen typically emit violet light. Dust particles can also absorb and scatter light, changing the color of the nebula overall.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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