What kind of stellar remnant forms a Planetary Nebula?
Answer
The outer layers gently puffed away by a dying medium-sized star like the Sun
Planetary nebulae are formed when medium-sized stars exhaust their fuel and expel their outer layers, which are then illuminated by the remaining hot, small core, which will become a white dwarf.
#Videos
Nebulae: Crash Course Astronomy #36 - YouTube
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