From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

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 ...

From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...

Here’s what you will learn when you read this story: Abiogenesis—the emergence of life from nonliving organics—is the leading theory regarding how life spawned on Earth, but it is being questioned.

In the many decades of NASA exploration, there has only been one detection that got on that scale. It was collected by the ...

Polling shows that nearly half of Americans now believe aliens have visited this planet—and that the number who aren't sure ...

A new study used mathematical formulas and demonstrated that it’s highly unlikely life began on Earth. Instead, the researcher points to panspermia, a theory that life or the ingredients for life came ...

It's the oldest question on Earth. Where did we come from? Some people may thank a creator from above, but what if the hand that created humanity wasn't divine? What if aliens brought life to Earth?