NASA’s first crewed moon mission in decades was delayed as its engineers grapple with an all-too-familiar rocket problem: hydrogen leaks. Fixing the issue is even trickier than it may seem.

A United Launch Alliance Vulcan rocket carrying classified Space Force payloads suffered a booster problem but apparently ...

Moments after liftoff from Florida’s Space Coast early Thursday morning, a shower of sparks emerged in the exhaust plume of United Launch Alliance’s Vulcan rocket. Seconds later, the rocket twisted on ...

The agency recently delayed the Artemis 2 mission due to a liquid hydrogen leak that has plagued the SLS rocket.

United Launch Alliance flew its Vulcan rocket for only the fourth time early Thursday, but suffered yet another fiery burn through on one of its solid rocket boosters during a national security ...

SpaceX has temporarily grounded its Falcon 9 rocket after an upper stage failed to deorbit as planned during a Feb. 2 launch. Will the issue affect the company's Crew-12 astronaut mission?

The Vulcan rocket leapt off its pad at 4:22 a.m. EST, lighting up the Florida coast before a problem inside one of its strap-on boosters turned a routine climb to orbit into a high-stakes anomaly.

The next series of launch opportunities for the Artemis II mission begin March 3. If the mission doesn’t lift off in March, NASA will need to roll the rocket back to the Vehicle Assembly Building to ...

In one of the most stunning collapses in Olympic figure skating history, Malinin plummeted from a near-certain gold medal all ...

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