What describes the remnant core exposed after the outer envelope has been expelled?
Answer
A dense sphere fusing helium into carbon and oxygen, roughly Earth-sized
The contracting, inert core that remains has begun fusing helium into carbon and oxygen. It is extremely hot and dense, compressed into a volume similar to Earth, even though the star has lost 50 to 80 percent of its original mass.
#Videos
How Does A Red Giant Become A Planetary Nebula? - YouTube
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