Young Earth Evidence 4: Solar Unpowered

One of the most persistent, perplexing puzzlers that is pertinent to proponents of a primordial planet is the sun. Using uniformitarian timetables, if the Earth was billions of years old, the sun would been too cold for life to evolve. This provokes a plethora of perplexing excuses from proponents of evolution. Of course, the biblical creation model does not have this problem.
Evidence now supports astronomers’ belief that the sun’s power comes from the fusion of hydrogen into helium deep in the sun’s core, but there is a huge problem. As the hydrogen fuses, it should change the composition of the sun’s core, gradually increasing the sun’s temperature. If true, this means that the earth was colder in the past. In fact, the earth would have been below freezing 3.5 billion years ago, when life supposedly evolved.
The rate of nuclear fusion depends upon the temperature. As the sun’s core temperatures increase, the sun’s energy output should also increase, causing the sun to brighten over time. Calculations show that the sun would brighten by 25% after 3.5 billion years. This means that an early sun would have been fainter, warming the earth 31°F (17°C) less than it does today. That’s below freezing!
You can patiently ponder the rest of this layman's level post at "Faint Sun Paradox". A more detailed discussion is available in "The Young Faint Sun Paradox and the Age of the Solar System".

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