This will be the second time the astronauts will isolate in an effort to trace the air leak. According to NASA, the leak was first detected in September 2019 but has increased in recent months.During the astronaut isolation through Monday, the rest of the hatches on the ISS will be closed to try and locate the leak by monitoring air pressure in each module, according to NASA.[TRENDING: DeSantis to lift restaurant limits in Fla. | Here’s how to track your mail-in ballot | How can I tell difference between flu and COVID-19?]Both Moscow and Houston Mission Control Centers have been tracking a tiny air leak for several months.