Great Dark Spot

Hundreds of scientists and Mars-exploration enthusiasts will convene just north of Los Angeles later this week to present, discuss and deliberate the future landing site for NASA's next Red Planet rover – Mars 2020.

NASA's Voyager 2 probe, currently on a journey toward interstellar space, has detected an increase in cosmic rays that originate outside our solar system.

Cassini's Grand Finale orbits pay off: Final dives tell the story of the previously unexplored region between Saturn and its rings

Astronomers have uncovered tantalizing evidence of what could be the first discovery of a moon orbiting a planet outside our solar system.

Engineers at NASA's Jet Propulsion Laboratory in Pasadena, California, this week commanded the agency's Curiosity rover to switch to its second computer. The switch will enable engineers to do a detailed diagnosis of a technical issue that has prevented the rover's active computer from storing science and some key engineering data since Sept. 15.

A team of researchers have found a distant Kuiper Belt Object with an orbit that supports the theory of a distant, undiscovered large planet on the far edge of our solar system.