The Obama administration is requesting $17.7 billion for NASA in its fiscal 2013 budget, boosting spending for commercial manned space flight while reducing the scope of Mars exploration.
Read More...

A Russian Mars probe, stranded in low-Earth orbit after a malfunction following launch in November, reportedly fell back into the atmosphere Sunday, apparently breaking up over the southern Pacific Ocean west of Chile. Read More...

Ringing in the new year with back-to-back successes, a second NASA science satellite slipped into orbit around the moon Sunday, one day after an identical spacecraft braked into the same polar orbit. Read More...

A costly Russian Mars probe, stranded in low-Earth orbit after a malfunction following launch Nov. 8, is expected to fall back into Earth's atmosphere next month, Russian officials confirmed Friday. Read More...

A towering Atlas 5 rocket flashed to life and vaulted into space Saturday, putting on a spectacular show as it boosted NASA's Mars Science Laboratory rover on an eight-and-a-half-month voyage to the red planet. Read More...

United Launch Alliance hauled an Atlas 5 rocket carrying NASA's Mars Science Laboratory rover to the launch pad Friday for final preparations before blastoff Saturday on a showcase science mission. Read More...

NASA's $2.5 billion Mars Science Laboratory rover, the most complex and scientifically powerful robotic spacecraft ever built to explore the surface of another world, is poised for launch Saturday.
Read More...

Launch of NASA's $2.5 billion Mars Science Laboratory rover atop a United Launch Alliance Atlas 5 rocket has been delayed one day, from Friday to Saturday, to replace a battery in the booster's self-destruct system.
Read More...

A Delta 2 rocket blasted off Saturday and successfully boosted two NASA science satellites into space to kick off an ambitious $496 million mission to map the moon's gravity and internal structure.
Read More...

NASA's decommissioned Upper Atmosphere Research Satellite is expected to plunge back into Earth's atmosphere later this month, producing a shower of debris. Agency experts say risk to the public is minimal. Read More...

Launch of a Delta 2 rocket carrying twin satellites designed to precisely map the moon's gravity has been delayed to Saturday because of high winds aloft and a potential issue with the rocket's propulsion system. Read More...

A United Launch Alliance Delta 2 rocket is on track for launch Thursday, weather permitting, to kick off a $496 million mission to precisely map the moon's gravitational field. Read More...

NASA unveiled new closeup views of three Apollo landing sites Tuesday, clearly showing the footprints of visiting astronauts, the lower stages of the lunar landers and the tracks left behind by a dune buggy-like rover. Read More...

NASA's aging Opportunity rover is beginning what excited scientists say is a new mission exploring a 13.7-mile-wide crater that may hold unexpected clues about the ancient environment of the red planet. Read More...

NASA's $2.4 billion Mars Science Laboratory has completed an exhaustive series of functional tests to verify the car-size rover's readiness for launch in November on an eight-and-a-half-month voyage to the red planet .
Read More...

A powerful Atlas 5 rocket roared to life Friday and successfully launched NASA's Juno probe on a five-year voyage to Jupiter, the first step in a $1.1 billion mission to look for clues about the origins of the solar system. Read More...

A NASA spacecraft in orbit around Mars has detected signs of what appear to be seasonal flows of salty water on the surface of the red planet during warmer summer months, researchers said Thursday.
Read More...

NASA's Dawn spacecraft, now in orbit around the asteroid Vesta, is beaming back a treasure trove of data about one of the solar system's most ancient bodies. Read More...

NASA is readying the $1.1 billion Juno probe for launch Aug. 5 on a five-year voyage to Jupiter to kick off a challenging one-year mission to answer key questions about the formation and evolution of the solar system. Read More...

Two weeks after slipping into orbit around Mercury, NASA's MESSENGER spacecraft is beaming back a steady stream of intriguing pictures. A year-long campaign to map the planet is scheduled to begin Monday. Read More...

After a six-and-a-half-year journey, NASA's compact MESSENGER probe braked into a looping orbit around hellish Mercury Thursday, becoming the first spacecraft to take up long-term residence around the innermost planet.
Read More...

In a report to Congress this week, NASA said the agency's current budget does not include enough money to develop a new congressionally-mandated heavy-lift rocket and deep space exploration capsule by 2016. Read More...

NASA's $2.4 billion Mars Science Laboratory rover -- Curiosity -- is the most sophisticated unmanned lander ever built, a robot scientists hope will revolutionize humanity's understanding of the red planet (CNET repost). Read More...

In a high-speed computer-orchestrated descent jokingly referred to as "six minutes of terror," NASA's newest Mars rover will rely on a rocket-powered "sky crane" to lower the car-size robot to the surface (CNET repost). Read More...

Loaded with sophisticated instruments and a nuclear power pack immune to sunlight-dimming dust, NASA's Curiosity rover will search for carbon compounds and geologic clues about the habitability of the red planet (CNET repost). Read More...

NASA warns “a miracle” may be needed to restore the Spirit Mars rover to even limited operation. Read More...