What range represents the estimated age of UY Scuti, contrasting it with the Sun's lifespan?
Answer
Only $10$ to $20$ million years old
UY Scuti's current stellar phase is relatively brief in the grand scheme of stellar evolution, especially when compared to the Sun's estimated lifetime of $4.6$ billion years. Due to its enormous mass, UY Scuti consumes its nuclear fuel supply at an accelerated rate. This rapid consumption means that it is considered surprisingly young, with an estimated age falling within the range of $10$ to $20$ million years. Despite this short tenure, it is already approaching the end of its life cycle, unlike the Sun which has billions of years remaining in its main sequence phase.
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