African American astronaut Mae Jemison, left, smiles as suit technician Sharon McDougle performs an unpressurized and pressurized leak check on her spacesuit prior to the STS-47 Spacelab-J mission on ...

This is Part 1 of a two-part series on the military’s secretive Space Rapid Capabilities Office. ALBUQUERQUE, New Mexico—For decades, America’s big defense contractors have known they can count on a ...

Liftoff had been scheduled for 9:10 p.m. ET tonight (Dec. 16). When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Update for 10:05 p.m. ET on Dec.