NASA fired up RS-25 engine No. 20001 at the Fred Haise Test Stand at NASA’s Stennis Space Center at Bay St. Louis, ...

Watch how the Space Launch System rocket RS-25 undergoes a core stage engine test-fire. Credit: NASA's Stennis Space Center ...

CAPE CANAVERAL, Fla. -- NASA said Tuesday it will now target a March launch of its new moon rocket after running into exasperating fuel leaks during a make-or-break test a day earlier. The space ...

For more than 60 years, nearly every large rocket used some combination of the same liquid and solid propellants. Refined ...

SpaceX chief Elon Musk said in February that the mighty Starship rocket would embark on its 12th test flight this month, although several more recent reports have suggested that it might not leave the ...