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

According to popular media, the search for alien life involves advanced technology, space exploration and sometimes even government conspiracies and secret programs. But according to University of ...

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.

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

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The comet originated from outside our solar system and poses no danger to our planet. NASA officials have rejected theories that the object could be an alien spaceship. While not visible to the naked ...