The Distinctive Color of a Reflection Nebula Is

question 95

Multiple Choice

The distinctive color of a reflection nebula is

• A) blue,caused by the preferential scattering of starlight by very small dust grains.
• B) starlight of all colors from cool stars,predominantly in the red part of the spectrum,reflected by ice crystals of water,ammonia,and methane.
• C) a mixture of several specific colors coming from fluorescence of atoms excited by ultraviolet radiation emitted by hot stars.
• D) red,coming from the emission of light from hydrogen gas.

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