https://apnews.com/07f4e3e34d8d03b39ae4c32006968d8a

CAPE CANAVERAL, Fla. (AP) — Spacewalking astronauts worked to complete repairs to a cosmic ray detector outside the International Space Station on Saturday and give it new life.

It was the fourth spacewalk since November for NASA's Andrew Morgan and Italy's Luca Parmitano to fix the Alpha Magnetic Spectrometer. They installed new coolant pumps last month to revive the instrument's crippled cooling system and needed to check for any leaks in the plumbing.