“Microlightning” exchanges among water droplets could have sparked the building blocks of life on ancient Earth, new research ...

Did life on Venus die or hide? NASA's Venus Life Equation retools the Drake Equation to explore past oceans, microbial ...

Suppose humanity was faced with an extinction-level event. Not just high odds, but certain-sure. A nearby supernova will ...

There are extraterrestrials among us. They landed four billion years ago when Earth was just forming. And they weren't humanoids with tall, slender bodies and dark, almond-shaped eyes. The aliens ...