The research is mounting up that we might not be alone in this big wide world. So what's the likelihood that aliens are out ...

Pluribus imagines Kepler-22b as an ocean world that sends a gift to humanity through radio waves. In real life, no such signals have arrived, no RNA instructions lurk in the static, and no shared ...

An ancient Martian system of canyons and valleys could be home to archaic life forms, a ground-breaking scientific paper has ...