NASA's towering Space Launch System rocket is about to depart the launch pad in Florida where it has been vertical for more than a month in anticipation of the first U.S. human lunar mission in decades. There it sat at Launch Pad 39B for weeks as the ...

NASA on Wednesday is set to roll its enormous Space Launch System rocket back to the hangar for repairs, a move that will delay the launch of four astronauts on a long-awaited flight around the moon by at least a month. The 322-foot-tall rocket has been ...

NASA hauled its Artemis II moon rocket off its seaside pad Wednesday for a slow trip back to a processing facility to track down and fix a helium pressurization problem that delayed launch of four astronauts on a flight around the moon from this month to ...

NASA had just announced a flawless wet dress rehearsal and possible early March liftoff of its long-awaited Artemis II mission, but all that changed in less than 24 hours. A closer look at the giant SLS moon rocket revealed a new issue – one that will ...

One hundred years ago yesterday, Robert H. Goddard ignited a small rocket fueled by gasoline and liquid oxygen on a frozen farm in Auburn, Massachusetts. That flight lasted roughly 2.5 seconds. Today,

NASA and contractor engineers pumped more than 750,000 gallons of supercold propellants into the agency's huge Space Launch System rocket Thursday without any signs of hydrogen leaks in a major step toward launching four astronauts on a flight around the ...