What is the typical lifespan range of K dwarfs compared to G dwarfs?
Answer
15 to 45 billion years.
K dwarfs, also known as orange dwarfs, are significantly longer-lived than G-type stars like our Sun. While G-dwarfs typically last about 10 billion years, K-dwarfs are characterized by their steady burning over an extended period ranging from 15 to 45 billion years. This extended lifespan provides a vastly larger timescape, potentially double that of the Sun, which is crucial for allowing complex biological evolution to proceed without the immediate threat of stellar demise.
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