Space
We may never figure out where interstellar comet 3I/ATLAS came from
The surface of comet 3I/ATLAS may have been so radically altered by cosmic rays that deducing its home star system would be impossible
News
Space
Sorry, but interstellar visitor 3I/ATLAS really is a comet, not aliens
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
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?
The report of possible biosignatures on the exoplanet K2-18b is exciting, but we are a long way from establishing beyond doubt that there is life on such a distant world
News
Society
Why an increasing belief in alien visitations is a real-world problem
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