Geologic map of the asteroid belt. Circles identify the asteroid families from which our meteorites originate and letters mark the corresponding meteorite type. The horizontal axis ranges from short ...

Mars has hosted a surprising number of robotic visitors, yet the question of where humans should touch down remains wide open. As engineers refine maps of potential Mars landing sites, one location ...

A new map that details gravitational anomalies on Mars has revealed 20 mysteriously dense blobs, including a dog-shaped mass, buried below the planet's north pole. And researchers have no clear idea ...

NASA plans to send humans on a scientific round trip to Mars potentially as early as 2035. The trip will take about six to seven months each way and will cover up to 250 million miles (402 million ...