SpaceX has unveiled plans to make its Falcon 9 rocket fully reusable, using the engines of the first and second stages for powered descents to vertical landings in a bid to dramatically lower launch costs. Read More...

Analysis of data collected by a NASA infrared space telescope shows there are fewer near-Earth asteroids than previously believed, scientists said Thursday. But most of the nearly 20,000 bodies have yet to be detected. Read More...

In a major milestone for China's space program, a Long March rocket successfully boosted an unmanned prototype space station module into orbit Thursday for tests of robotic rendezvous and docking systems. Read More...

NASA's UARS satellite plunged back into the atmosphere early Saturday, likely raining debris into the north Pacific Ocean. But analysts have not yet confirmed exactly when, or where, the spacecraft came down. Read More...

What appeared to be a communications problem that left Russian flight controllers in the dark about the status of a Soyuz capsule descending to Earth Sept. 16 was, in fact, no problem at all, a crew member said Thursday. Read More...

Amateur satellite trackers hoping to catch a glimpse of NASA's Upper Atmosphere Research Satellite when it plunges into the atmosphere Friday will need patience, clear skies and a large helping of luck, experts say. Read More...

Three space station crew members returned to Earth aboard the Russian Soyuz TMA-21 crew ferry craft late Thursday, leaving three crewmates behind to await the delayed arrival of replacements. Read More...

NASA's Kepler space telescope, searching for planets around distant suns, has found a Saturn-size world orbiting a pair of stars 200 light years from Earth, the first discovery of a "circumbinary" planet. Read More...

NASA unveiled the design of a new post-shuttle super rocket Wednesday intended to boost astronauts on flights to nearby asteroids and, eventually, Mars. If fully funded, initial test flights are expected in 2017. Read More...

NASA will evaluate ATK's proposed two-stage Liberty rocket as a possible manned launcher for future commercial flights to the space station under an unfunded Space Act Agreement, officials said Tuesday. 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.
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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...

A space station astronaut said Tuesday the Russians may be able to launch a manned Soyuz spacecraft to the lab complex by early November if an ongoing failure investigation goes well. 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...