According to an alternative model of how intelligent life emerges on planets like Earth, the existence of aliens—and human ...

As Earth approaches warmer levels experienced earlier in its geologic history, it may be bad news for human survival.

Researchers present an alternative to the long-held “hard steps” theory to explain the evolution of complex life, suggesting ...

Scientists challenge the idea that intelligent life is rare. They argue that evolution follows planetary changes, not random ...

Planet demographics reveal a puzzling lack of worlds in a certain size range throughout the galaxy F or centuries our solar ...

When was Pluto discovered? Pluto was discovered in 1930 by Clyde Tombaugh, an American astronomer at the Lowell Observatory ...

If so, that has important effects for life throughout the universe. It suggests that life might have been likely to form ...

A popular model of evolution concludes that it was incredibly unlikely for humanity to evolve on Earth, and that extraterrestrial intelligence is vanishingly rare.

The cool conditions which have allowed ice caps to form on Earth are rare events in the planet’s history and require many ...

Earth’s ice caps exist due to a rare combination of cooling processes. Without these, Earth would likely remain warm and ...

Scientists have argued that the chances of there being intelligent life on other planets isn't quite as unlikely we might ...

Researchers from Penn State University proposed in a new academic paper that human-like lifeforms could arise as a logical consequence of a planet’s development — contradicting the long-held “hard ...