NASA is facing a race against time to save its 21-year-old spacecraft, the Neil Gehrels Swift Observatory, which has been on a critical mission to study some of the most powerful explosions in the ...

NASA’s first crewed moon mission in decades was delayed as its engineers grapple with an all-too-familiar rocket problem: ...

NASA’s Neil Gehrels Swift Observatory, a 21-year-old space telescope that has tracked gamma-ray bursts and cosmic explosions since 2004, is losing altitude fast enough that the agency has suspended ...