This composite image was weeks in the making, as Horálek’s two "crossings" happened months apart. Mars traced its path ...

SAN FRANCISCO -- Venus and Mars, planet Earth's two closest neighbors, have been inching ever closer to each other during the month of July. Monday night, they promise to put on a show, appearing at ...

The CEO is interested in bringing back rock samples collected by the agency's Perseverance rover from the red planet after some of the samples collected by the rover contained mineral textures that ...

Shannon Curry remembers the first time she saw the moon up close. She was an undergraduate at Tufts University doing research in Oracle, Arizona, and got the chance to see the moon through a ...