Dubbed "araneiform terrain," the Mars surface formations span over a half-mile long and have hundreds of branches that ...

The "spiders" are actually features in the Martian crust called "araneiform terrain," and scientists now understand how they might have formed.

A Mars scientist shares the inside story of the NASA Curiosity rover's poignant first photo of Earth and Mars moon Phobos ...

"Primordial black holes do not live in the solar system. Rather, they're streaming through the universe, doing their own thing," said researcher Sarah Geller.

An enormous plume of magma is slowly but steadily rising underneath Mars and could one day provoke an eruption of the solar system's tallest volcano. An enormous plume of magma over a thousand miles ...

A study published in early September detailed how scientists were able to awaken “spiders” spotted on Mars in a lab ...

In other words, these hidden features could be the remnants of long-extinct volcanoes or the scars left by massive space ...

Researchers have recreated the bizarre spider-like features seen on the surface of Mars for the first time ever. The ...

A new analysis of Mars' gravitational field has revealed hidden structures buried beneath the remains of an ancient ocean.

Space probes have captured images of intriguing spider-like formations on Mars. NASA has put forth a theory on what created ...

Tests on Earth appear to confirm how the Red Planet’s spider-shaped geologic formations are carved by carbon dioxide.

Mars is home to strange spider-shaped geologic formations known as the araneiform terrain, which are found mostly in the ...