I asked him why NASA needed a heavy-lift rocket when SpaceX had started to build the Falcon Heavy, which had about 70 percent of the lift capacity of the SLS booster, at less than 10 percent the cost.

As the administration slashes spending on science, NASA is running low on new missions.

Tense, public squabbles between SpaceX CEO Elon Musk and NASA have stirred the space industry, but behind the scenes, space science has continued business as (almost) normal.

Experience authentic NASA rocket launches and thrilling spacewalks firsthand with Netflix’s latest documentary series.

“We are going.” That is the catch phrase that NASA is using in the lead-up to the debut flight of its new moon rocket, which could launch as early as Monday at 8:33 a.m. Eastern time.

NASA’s Space Launch System rocket with the Orion spacecraft aboard is seen atop the mobile launcher at Launch Pad 39B, on August 29, 2022, as the Artemis I launch teams loaded more than 700,000 ...