Evolutionists believe that Earth resembled a snowball in its early days. Image courtesy of NASA.
Joel Kontinen
Great age is not always an asset, not even for planets or stars. The Earth should actually be void of life if our solar system were 4.6 billion years old.
According to theoretical models, the Sun would have been much fainter and thus given less heat to Earth with the result that average annual temperatures would have fallen below the freezing point.
In other words, life might not have evolved on a snow-covered planet.
The problem is known as the faint young sun paradox. It was popularised by Carl Sagan and George Mullen in 1972. Recently, New Scientist surveyed that current state of the problem and could not produce a credible solution for it.
Source:
Clark, Stuart. 2013. How was Earth's life kindled under a cold sun? New Scientist 2904, 44-47.
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