Amy Klamper

Massive cost overruns on NASA's James Webb Space Telescope will imperil funding for the agency's on-orbit astronomy missions.

Rocket and spaceship builder SpaceX has raised another $50 million from investors to support its commercial space vehicle projects.

NASA's next flagship observatory, the James Webb Space Telescope, will cost an extra $1.5 billion and launch in 2015 - more than a year late.

NASA has awarded a total of $7.5 million spread across 13 different U.S. companies to fund new concept studies into affordable heavy-lift rocket ideas.

SpaceX has postponed a planned Nov. 20 launch of its Falcon 9 rocket and Dragon cargo vessel to no earlier than Dec. 7

The Nov. 2 elections will likely bring two vocal critics of President Obama's new direction for NASA into leadership roles on key oversight committees for the space agency.

NASA chief Charles Bolden said his recent meeting with the leader of China's space agency will set the stage for future U.S.-Chinese cooperation in space.

The first launch of SpaceX's new Dragon space capsule has been delayed by 10 days to Nov. 18.

The company behind NASA's new Orion space capsule has teamed up with lawmakers for funding support.

Discussions on possible U.S.-China cooperation for future human spaceflight efforts is on the agenda for NASA chief Charles Bolden's upcoming trip to China.

NASA has advised contractors to anticipate reduced spending on the moon-bound Constellation program it plans to cancel, prompting a new round of contractor layoffs.

NASA chief Charles Bolden plans to visit China this month for high-level talks about possible cooperation on human spaceflight.

Some members of Congress want NASA to launch its ambitious Solar Probe Plus mission by 2015.

The NASA authorization bill passed by the Senate last month will appear before the House floor Sept. 29, lawmakers say.

The U.S. House recessed Sept. 24 without taking up a three-year NASA authorization bill, dimming prospects for passage of the nearly $50 billion measure before midterm elections Nov. 2.

A compromise NASA spending bill has been drafted by a House committee, one which includes more funding for commercial spaceflight and robot probes.

The private spaceflight company SpaceX is now targeting a November launch for its first Dragon spacecraft test.

Space Exploration Technologies (SpaceX) is modifying the software for its Falcon 9 rocket.

U.S. Sen. Bill Nelson is pushing for legislation that would provide tax breaks for commercial space ventures that would transport astronauts into orbit.

A controversial House NASA authorization bill that appeared headed for a floor vote today has stalled.

The U.S. House of Representatives is expected to vote on a NASA authorization bill as early as July 29.

Republican lawmakers are criticizing President Barack Obama's plan to scrap the nation's moon program and the thousands of highly skilled jobs that could be lost as a result.