check coolant leak on International Space Station during spacewalk

Russian cosmonauts Oleg Kononenko and Nikolai Chub are scheduled to complete a spacewalk 

from the International Space Station Wednesday, according to NASA.   

While on their spacewalk the cosmonauts will investigate a radiator leak on

the Nauka multipurpose laboratory module, which leaked coolant on Oct. 9  

When the coolant leak was discovered, the station's crew closed shudders on

multiple modules to prevent coolant from gathering on the station's windows.