Enlarge / A Progress spacecraft is seen departing the space station earlier this month. (credit: NASA)
Russia's state-owned space corporation, Roscosmos, reported Saturday that a Progress supply ship attached to the International Space Station has lost pressure in its external cooling system.
In its statement, Roscosmos said there was no threat to the seven crew members on board the orbiting laboratory. NASA, too, said the hatch between the Progress MS-21 vehicle and the space station was open. Notably, the incident with the supply ship came within hours of the safe docking of another Progress ship, MS-22, which is in good health.
Although the initial Roscosmos statement was vague about the depressurization event, Dmitry Strugovets, a former head of space agency Roscosmos' press service, later clarified it was a coolant leak. "All of the coolant has leaked out," he said via Telegram.
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