For more than 60 years, nearly every large rocket used some combination of the same liquid and solid propellants. Refined kerosene was favored for its easy handling and non-toxicity, hydrazine for its storability and simplicity,

ATLANTIC, Va. -- Crews searched for scorched wreckage along the Virginia coast Wednesday in hopes of figuring out why an unmanned commercial rocket exploded in a blow to NASA's strategy of using private companies to fly supplies and, eventually, astronauts ...

On January 28, 1986, Space Shuttle Challenger broke apart just 73 seconds after liftoff. Pilot Michael Smith's final words revealed something was very wrong.

Commercial launch providers continue to advance propulsion technology with a renewed focus on liquid oxygen and methane propelled rockets and spacecraft. As systems grow in scale, carrying millions of pounds of propellant,

NASA's Artemis II mission completes a critical engine burn, propelling the Orion spacecraft and its four-person crew out of Earth orbit toward the moon.