NASA's Voyager 1 probe swaps thrusters in tricky fix as it flies through interstellar space 

 NASA's most distant spacecraft had a critical thruster problem far from home. Fixing it required a long-distance call to overcome extreme cold and dwindling power. 

https://cdn.mos.cms.futurecdn.net/Aevg5Lf897c5wagmjmsp8Z.jpg

https://www.space.com/voyager-1-interstellar-space-thruster-fix