A NASA image of Mars appears to show an eerie, jellyfish-like figure lurking in the distance.

Given the size and age of the universe, it should be full of species with technology far more advanced than our own. But so far there is no trace ...

A NASA rover image of a rock formation on Mars resembling a doorway has sparked speculation about alien life, though experts ...

Stickney Crater, which is about 9 kilometers across, could hold clues to the moon’s history. If Phobos formed after a giant impact on Mars, the collision that created Stickney may have happened ...

The Perseverance rover on Mars inspects a rock dubbed Cheyava Falls with the Scanning Habitable Environments with Raman & ...

When NASA scientists need to test equipment or study environments that might exist on Mars, they don’t always have to leave Earth. The Mono Lake Tufa State Natural Reserve near Lee Vining offers a ...

A NASA Curiosity rover image has sparked claims of an 'alien missile' on Mars, though NASA attributes such formations to natural geological processes.

A NASA image of Mars has sparked fresh claims of life on the Red Planet after Curiosity captured a mysterious object that some believe is evidence of an alien civilization.

In searches for past and present Martian life, some scientists say we’ve been too cautious to see what’s right in front of us ...

A copy of the game Ripley’s Hive Exterminator Pack – Includes an exclusive cosmetic outfit themed to Ellen Ripley’s appearance near the dramatic climax of 1986’s blockbuster masterpiece, Aliens. All ...

Add Yahoo as a preferred source to see more of our stories on Google. A rocky planet orbiting in the habitable zone of a sun-like star may look like a perfect place for life to thrive — but not if ...