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

The Space Launch System rocket's RS-25 engine was fired up for the “final round of certification testing ahead of production ...

CAPE CANAVERAL, Fla. (AP) — NASA took another crack at fueling its giant moon rocket Thursday after leaks halted the initial dress rehearsal and delayed the first lunar trip by astronauts in more than ...

The so-called " wet dress rehearsal " will load the Space Launch System with 700,000 gallons of ultra‑cold propellants at the ...

NASA's Artemis II rocket will launch from the Kennedy Space Center, sending four astronauts around the moon. Here's what to ...

NASA's Space Launch System rocket for the Artemis moon mission is one of the largest ever. Here's how it compares to Starship, Saturn V and more.

Add Yahoo as a preferred source to see more of our stories on Google. NASA's Artemis II Space Launch System rocket and Orion spacecraft roll back to the Vehicle Assembly Building, Wednesday, Feb. 25, ...

NASA engineers manage propulsion systems and space communications to maintain Artemis II’s schedule, ensuring the Orion spacecraft and crew remain connected from launch to splashdown.

NASA's Space Launch System rocket developed for the agency's Artemis lunar program is among the tallest in the world. Here's how it stack up.