51动漫

Alien life

Space

Sorry, but interstellar visitor 3I/ATLAS really is a comet, not aliens

Interstellar objects like 3I/ATLAS are exciting, but there is no reason to claim that they are evidence of alien spacecraft 鈥� sometimes a comet is just comet, says Robin George Andrews

Comment

Space

Water might be even more important for alien life than we thought

News

Space

Stellar flares may hamper search for life in promising star system

News
Trees against starry sky

Space

Why are the physical constants of the universe so perfect for life?

Features

Space

Astronomers double down on claim of strongest evidence for alien life

News

Space

Alien megastructures would likely self-destruct before we spot them

News

Space

Signs of alien life on exoplanet K2-18b may just be statistical noise

News

Space

Claims of alien life are overhyped 鈥� and miss the real accomplishment

Comment

Space

Will we ever have confirmation of life outside our solar system?

News

Society

Why an increasing belief in alien visitations is a real-world problem

Increasing numbers of people believe Earth has probably been visited by aliens. That鈥檚 a societal problem, says Tony Milligan

Comment

Space

Exoplanet plate tectonics: A new frontier in the hunt for alien life

Features

Space

Search for alien transmissions in promising star system draws a blank

News

Space

Two new books explore how UFOs captured the world鈥檚 imagination

Culture

Space

Why NASA is sending a probe to Europa 鈥� and what it鈥檚 looking for

Features