One of NASA's most senior and still-operational spacecraft reached a milestone: the rover Opportunity completed its first 25 miles traveling across the surface of Mars!
Recently, NASA administrator Charles Bolden rephrased the "Moon, Mars and Beyond" mission plan to better align the steps toward Mars with budgetary realities and to balance human space programs with more cost-effective robotic missions.
Modern explorers have found a previously unknown ocean -- but this one's on Saturn's moon Enceladus. Learn more from Chabot Space & Science Center's Ben Burress at KQED Science.
The moon often seems like an ancient relic of space exploration, that dusty, dry, airless ball of rock and soil that we visited decades ago and have since left alone—possibly because we found nothing there but dust, rock, and soil? Not so fast. Exploration in the past few years has revealed aspects of the moon that contradict what we were taught in school.
On July 19, NASA's Cassini probe captured a picture of the Earth and Moon, offering us a perspective of all of humanity on one tiny dot in space, and a reminder that Cassini is still out there exploring the distant reaches of the Solar System.