Stacking up

Artemis 1: NASA SLS megarocket hits another milestone

NASA’s Artemis program has a lofty goal to send humans back to the Moon, but the first steps toward getting off the ground may look familiar to anyone who ever played with blocks as a kid.

On June 11, engineers started “stacking” the Space Launch System core stage rocket — an unassuming name for the multi-day process of lifting the 188,000-pound rocket and attaching it to its boosters.