Spacewalking astronauts ventured out for the second week in a row Friday to repair a cosmic ray detector, this time actually cutting into the $2 billion instrument.
![](https://scx1.b-cdn.net/csz/news/tmb/2019/16-spacewalking.jpg)
Source:
https://phys.org/news/2019-11-spacewalking-astronauts-cosmic-ray-detector.html