A pending contractor switchup marks another blow to Boeing, which is struggling to prove itself as a reliable strategic partner to NASA.

NASA has wasted no time in selecting the vehicle that will replace the upper stage on its new plans for a standardized Space Launch System rocket.

The only development it needs is a cone like the SLS LVSA (or SLS Block 1B USA) that goes from 9m to 5m diameter. SpaceX can probably have a flight test prototype welded up by the middle of next week.

When NASA Administrator Jared Isaacman announced the revamped approach to the Artemis moon program, it was unclear whether ...