Moments after two of the Falcon 9's first stage engines shut down, the remaining seven Merlin engines cut off at an altitude of 80 kilometers, or about 50 miles, and a velocity of Mach 10. The second ...

Responding to criticism from a review panel that questioned the science agenda of NASA's Curiosity Mars rover, senior managers Thursday defended the $2.5 billion mission, saying the spacecraft had ...

Welcome to Spaceflight Now's live coverage of the Atlas 5 rocket launching the WorldView 3 satellite. Text updates will appear automatically; there is no need to reload the page. Follow us on Twitter.

Live coverage of the flight of an Ariane 5 rocket with the ABS 2 and Athena-Fidus satellites. Text updates will appear automatically; there is no need to reload the page. Follow us on Twitter.

Welcome to Spaceflight Now's live coverage of SpaceX's second operational cargo resupply mission to the International Space Station. Text updates will appear automatically; there is no need to reload ...

Orbcomm Inc., owner of a data communications satellite launched by SpaceX on Sunday, is evaluating whether it can recover the spacecraft after it was deployed in a lower-than-planned orbit by a Falcon ...

After the rocket's nine Merlin engines pass an automated health check, four hold-down clamps will release the Falcon 9 booster for liftoff from Complex 40. Moments after two of the Falcon 9's first ...

Firing its thrusters for a mere six seconds early Sunday, NASA's Mars-bound Curiosity rover added more precision to its flight path for a high-stakes entry, descent and landing next Monday morning.

After fears of losing the ability to hear in real-time whether the Curiosity rover lands successfully on the Red Planet next weekend, NASA Tuesday maneuvered its decade-old Mars Odyssey orbiter into ...

Dragon C2+ TimelineCOMPILED BY WILLIAM HARWOOD Updated: May 21, 2012 DATE/EASTERN...DD...HH...MM...SS...EVENT 03:44:38 AM...00...00...00...00...Launch 03:46:02 AM ...

Highly-refined kerosene - a product called RP-1 - begins flowing into the Falcon 9 rocket's first and second stages. T-minus 3 hours, 15 minutes Fueling Complete The Falcon 9's propellant tanks are ...