The Dhofar desert's resemblance to the landscape on Mars, with similar riverbeds and salt domes, makes it a perfect location for more than 200 scientists from 25 nations to test out technology for a manned mission to Mars.
Six astronauts have emerged after living more than half a year isolated in a Mars simulation laboratory at the base of the Mauna Loa volcano in Hawaii. The data will help NASA select the best candidates for the planned mission to Mars in 2030.
Cassini embarked on an auspicious quest to increase our knowledge of enigmatic Saturn. Today, 13 years later, the craft is about to end its mission as one of the most successful planetary probes in the history of space exploration.
Since the first planet beyond our solar system was discovered almost 30 years ago, the search for exoplanets has turned up thousands of fascinating worlds.
NASA's planet-hunting telescope offers up even more evidence that Earth-like planets orbiting sun-like stars are 'not rare.'
A man collects lotus flowers to sell while floating on a tire tube at a pond in Colombo, Sri Lanka, Feb. 23.
A piece of shielding was lost, but Mission Control worked with two veteran astronauts to save the day.
The 15-year-old company launched a recycled rocket into space, then recovered it, taking a giant leap toward making spaceflight more like aviation.
SpaceX is pioneering a 'reduce, reuse, recycle' approach to space with the second launch of a used Falcon 9.
On Tuesday NASA unveiled its new, online Image and Video Library that brings together more than 140,000 photos, videos, and audio clips.
The answer is a firm no, but scientists think they've taken an important step toward better understanding the geology of Mars.
The International Spacecraft Working Group met to discuss possible designs for humanity's next outpost in space.
In pinpointing the Indian spacecraft, NASA honed a technique for tracking errant objects that’s likely to see action again soon.