Leaky Soyuz Tests Thrusters on ISS, US Spacewalk Delayed

A leaking Soyuz capsule on the International Space Station tested its thrusters on Friday (December 16) as Russian engineers investigated why it suffered an uncontrolled coolant leak this week.

The Russian-built Soyuz spacecraft, dubbed Soyuz MS-22, caused a coolant leak on Wednesday evening (December 14) as two cosmonauts prepared for a spacewalk outside the station. Russia’s space agency Roskosmos has canceled that spacewalk and indefinitely postponed another as it investigates the cause of the coolant leak that sprayed coolant particles into space from an external conduit on the capsule. On Friday, NASA also postponed a scheduled US spacewalk to Dec. 21, a two-day lapse, as Soyuz work continues.

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