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What is the approximate age of the star cluster in the HR diagram below? (Hint: Main Sequence Stars of spectral between types A and B core supply of hydrogen is sufficient to last about 250 million years. Between A and F about 2 billion years. Type G about 10 billion years. Between K and M about 30 billion years..)
Self-Sustainability
The ability of a system, community, or individual to maintain and support itself without relying on external resources.
Nihilism
A philosophy that rejects generally accepted or fundamental aspects of human life, such as objective truth, morality, or meaning.
Moral Beliefs
Principles or values that govern an individual's understanding of right and wrong.
Purpose
The reason for which something is done or created or for which something exists.
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