A Russian module called Zvezda has been venting the space station’s air through cracks since 2019 — losing nearly 2 kilograms a day before NASA auditors flagged it the highest safety risk aboard

Since September 2019, the Russian-built Zvezda service module has been leaking air through hairline cracks in a narrow tunnel called the PrK — at one point losing 1.7 kilograms of atmosphere a day. NASA auditors now rate it the highest open safety risk on the entire International Space Station. The post A Russian module called Zvezda has been venting the space station’s air through cracks since 2019 — losing nearly 2 kilograms a day before NASA auditors flagged it the highest safety risk aboard