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Unformatted text preview: 5. Thermal equilibrium: the heat produced from the core is the same as the heat coming from the surface 6. Density of the Sun o The core is much more dense than the outer layers o Density of the corona is about equal to a really good vacuum 7. An imaginary star, Alpha Fictionis is 3x as hot as the Sun. What color would you expect it to appear? o Blue/white o Yellow/white o Orange/red 8. How many times more energy does it radiate (same mass and radius, just 3x as hot) o The same amount o 3x o 9x o 27x o 81x 9. If the Sun has a total lifetime around 10 billion years, how long would you expect Alpha Fictionis to live, to the nearest power of ten? o 100 million years o 1 billion years o 10 billion years o 100 billion years o 1000 billion years...
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- Spring '08
- Astronomy, Alpha Fictionis, huge glowing ball