Emission nebula glow and reflection nebula reflect the light
form other stars
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Emission Nebula is an ionized gas cloud that shines in various
colors. Its ionization is from the high energy proton released by
its neighboring star.
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A cloud in outer space consisting of gas or dust and planetry
nebula is one of the types also called ring nebula or A planetary
nebula is an emission nebula consisting of a glowing shell of
gas