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

For decades, the search for life beyond Earth has focused on distant exoplanets and the rusty plains of Mars. Now, a small ...

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.

How did life begin on Earth? While scientists have theories, they don't yet fully understand the precise chemical steps that ...

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

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 ...

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