Understanding where Earth's essential elements came from—and why some are missing—has long puzzled scientists. Now, a new ...

A pipe dream or a scam to enrich himself further? Here's why scientists are skeptical of Elon Musk's dream for humans to colonize Mars.

Scientists Suggest That Mars Was Warm and Held Water Billions of Years Ago, Much More Like Earth in the Past Researchers have ...

The northern plains of Mars, marked by thousands of mounds and hills, hold significant evidence of the planet's watery past.

The Martian dichotomy came to light in the 1970s following the Viking Probe's transmission of remarkably detailed Martian ...

NASA's remarkable new sample from Mars will help scientists get a better understanding of the planet's history and whether it ...

Harvard scientists explain how Mars had warm spells billions of years ago, allowing rivers and lakes to exist.

UK researchers have confirmed the existence of a “super Earth” located 20 light-years away that could reveal the existence of ...

The car-sized Curiosity rover has spotted evidence of once quite hospitable environs on Mars.