Massive star may be the reason Earth isn't a waterworld


Making Sugar
Feb 24, 2016
The Earth as a habitable planet may be rarer than we thought. Scientists have used computer models to show that the reason our planet and has a moderate climate and isn't an ocean world is because there was a massive star in the vicinity of the primordial solar system. This star provided the growing inner planets with radioactive elements that evaporated some of the water that otherwise would have been delivered to them.

One of the great scientific mysteries during the Victorian era was why the Earth wasn't a frozen wilderness? As geologist learned more about how to calculate the age of the planet accurately, the numbers produced a real poser because they found that the Earth shouldn't be anywhere near as warm as it is.
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