Humans have always been fascinated with space. We frequently question whether we are alone in the universe. If not, what does ...

Across astronomy and astrobiology, a quiet but profound shift is underway. Instead of assuming the galaxy teems with ...

WASHINGTON, Feb 14 (Reuters) - Roughly 300,000 years ago, our species first appeared on the African landscape before spreading globally and coming to dominate the planet. All this happened about 4.5 ...

Paleontologists who study earth’s ancient fossil record might not seem to be the obvious choice when asking about the prevalence of intelligent life in the cosmos. But paleontology, the study of ...

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

When other factors are considered — such as the fraction of hospitable planets that host any life at all and how long a signal-emitting civilization might last — the possibility of many active, ...

For decades, many scientists have relied on the "hard steps" model to suggest that intelligent life is rare — the improbable result of a series of unlikely evolutionary leaps. But new research by ...