Earth’s temperature history is good news for finding alien life

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An analysis of temperature during early Earth’s history supports more moderate average temperatures throughout the billions of years when life slowly emerged on Earth.

Theories about the early days of our planet’s history vary wildly. Some studies have painted the picture of a snowball Earth, when much of its surface was frozen. Other theories have included periods that would be inhospitably hot for most current lifeforms to survive. The new research suggests a milder youth for our planet.

Source: Earth’s temperature history is good news for finding alien life

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