(CNN) — Hundreds of basketball-size space rocks slam into Mars each year, leaving behind impact craters and causing rumblings across the red planet, according to new research. Mission planners could ...

Determining the size of an Earth-size exoplanet by the amount of starlight it blocks hundreds of light-years away once was the realm of science fiction. Measuring the mass of such a small planet based ...

Scientists may have pinpointed a massive, oddly shaped volcano taller than Mount Everest on the surface of Mars — and it has been hiding in plain sight for decades, according to new research.Related ...

NASA has quietly taken a major step toward crewed missions to Mars by selecting four people to live and work in a sealed, ...

Scientists may have pinpointed a massive, oddly shaped volcano taller than Mount Everest on the surface of Mars — and it has been hiding in plain sight for decades, according to new research.Related ...

Mars developed in as little as two to four million years after the birth of the solar system, far more quickly than Earth, according to results of a new study published in this week’s issue of the ...

Researchers have documented 55 instances of "mini lightning" over two Martian years by eavesdropping on the whirling wind ...

NPR's Ailsa Chang talks with Ashwin Vasavada, the head scientist for the Curiosity Mars rover, about the rover's 10 years of exploration. Ten years ago, engineers at NASA's Jet Propulsion Lab ...