Human intelligence wasn’t a cosmic evolutionary fluke, some scientists say. The case against cosmic loneliness is growing.

But the real truth is that alien life on other planets could be even stranger than floating balloons or amorphous organisms ...

Science fiction often shows aliens with human features like eyes, limbs, and faces. But science has a reason for questioning this idea. Through convergent evolution, similar environments and physical ...

Is intelligent alien life really out there? With powerful telescopes identifying more potentially habitable planets each year ...

The odds are that life is out there – but rather than little green men, it may look more like hydrothermal vent tubeworms ...