A set of fossilized footprints discovered in northern Arizona has revealed the silent journey of a prehistoric arachnid that walked the Earth around 260 million years ago. Preserved in stone, these ...

"This is four times more people than saw Neil Armstrong walk on the moon. Think about what a world event this is going to be.

Analysis by researchers at the University of Bern suggests that water and other volatile compounds arrived on Earth from ...

A shy space rock is making its lunar debut. Astronomers believe they’ve discovered another so-called quasi-moon of Earth, though it’s likely been circling undetected in near space for decades. Dubbed ...

Humanity's first look at Earth from the moon didn't come until Aug. 23, 1966, when this grainy, black-and-white image showed our planet as a crescent above the lunar horizon, appearing to rise as the ...

Scientists are exploring DNA, cloning and CRISPR technology to possibly revive the extinct dodo bird, sparking hope and ...

A strange shift in Earth's rotation is making our days milliseconds shorter — and scientists are racing to understand why. The days are getting shorter and not just because summer is waning in the ...