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How Astrobiology Could Be Scientific

Despite its propensity for wild speculation about life in space, there's one way Astrobiology could provide useful science.

Faint Young Sun Paradox Solved?

A major mystery for materialistic planetary science is solved—if you can swallow the miracles required.

Carbon Cycle Keeps Earth from Fate of Venus, Mars

Another delicate balance making Earth habitable has been identified: the carbon cycle.

Star Chemistry Constrains Habitable Zone

The chemistry of a parent star can have drastic effects on the habitability of an earth-like planet.
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