NASA’s Neil Gehrels Swift Observatory, launched in 2004, has been slowly losing altitude because of increased solar activity.

The agency’s Neil Gehrels Swift Observatory is at risk of falling into the atmosphere. A spacecraft set to launch Tuesday is tasked with pushing the satellite back into a stable…

NASA plans a bold robot mission to rescue the Swift telescope from imminent destruction in Earth's atmosphere.

A new launch date hasn’t been set for the rush rescue mission to save a NASA space telescope