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Component fatigue caused early shutdown of Merlin engine on last SpaceX launch
SpaceX has concluded fatigue on an engine cover caused one of the nine Merlin 1D first stage engines on the company's most recent launch to shut down early during ascent, leading to the loss of the booster during an offshore landing attempt in the Atlantic Ocean, an official said Monday.

Photos: Antares rocket blasts off from Eastern Shore of Virginia
A Northrop Grumman Antares rocket powered off its launch pad at Wallops Island, Virginia, on Feb. 20 with a Cygnus supply ship heading for the International Space Station.

Stuck propulsion valve delays second SLS test-firing
A troublesome liquid oxygen valve on the Space Launch System's first flight-rated core stage will keep NASA from performing a second test-firing of the rocket's four main engines this week.

Northrop Grumman supply carrier delivers to International Space Station
A Northrop Grumman Cygnus supply ship arrived at the International Space Station on Monday with more than 8,000 pounds of cargo, including new astronaut sleeping quarters, parts for the station's toilet, and numerous biomedical and technology experiments.

Antares rocket launches heavy cargo load to International Space Station
An Antares launcher rocketed into orbit Saturday from the Eastern Shore of Virginia, deploying a Northrop Grumman Cygnus supply ship carrying nearly 8,400 pounds of cargo to the International Space Station, the the most massive collection of payloads ever flown to the research outpost on a U.S. commercial freighter.

Launch of Starliner test flight slips to no earlier April 2
The launch of the next test flight of Boeing's Starliner crew capsule has been delayed to no earlier than April 2 after workers replaced spacecraft avionics units damaged in a power surge during testing.

Photos: Sun rises on Antares rocket at Wallops Island
A Northrop Grumman Antares rocket stands on pad 0A at Wallops Island, Virginia, on a frigid morning hours before a planned liftoff with more than 8,000 pounds of cargo heading for the International Space Station.

Antares launch timeline on the NG-15 mission
Northrop Grumman's Antares rocket will deliver a Cygnus supply ship into orbit Saturday to begin a pursuit of the International Space Station.
VideoLive coverage: Space Station cargo mission arrives at destination
The 15th resupply mission to the International Space Station by a Cygnus cargo freighter lifted off at 12:36 p.m. EST (1736 GMT) Saturday aboard an Antares rocket from Wallops Island, Virginia. The Northrop Grumman-owned spacecraft is carrying more than 8,000 pounds of experiments and provisions for the space station and its seven-person crew. Capture by the station's robotic arm occurred at 4:38 a.m. EST (0938 GMT) Monday.

Antares rocket loaded with time-sensitive cargo for launch to space station Saturday
A Northrop Grumman Cygnus supply ship — named the S.S. Katherine Johnson for the trailblazing NASA mathematician portrayed in "Hidden Figures” — was loaded with time-sensitive cargo Friday at a launch pad in Virginia for a midday blastoff Saturday toward the International Space Station.